|
|
| Fish Species in Amazon | |||||
| [No. of Species listed in Fishbase.org=804] | |||||
| Species | Family | Habitat | Length (cm) | Trophic level | Status |
| Abramites hypselonotus | Anostomidae | pelagic | 14 TL | 2.9 | native |
| Acanthicus hystrix | Loricariidae | demersal | 65 TL | 2.7 | native |
| Acanthodoras cataphractus | Doradidae | demersal | 15 TL | 2.0 | native |
| Acanthodoras spinosissimus | Doradidae | demersal | 17 TL | 3.3 | native |
| Acarichthys heckelii | Cichlidae | benthopelagic | 17 TL | 3.0 | native |
| Acaronia nassa | Cichlidae | benthopelagic | 19 TL | 3.7 | native |
| Acestrocephalus boehlkei | Characidae | benthopelagic | 17 TL | 3.0 | native |
| Acestrorhynchus abbreviatus | Acestrorhynchidae | benthopelagic | 27 TL | 3.8 | native |
| Acestrorhynchus altus | Acestrorhynchidae | benthopelagic | 29 TL | 4.5 | native |
| Acestrorhynchus falcatus | Acestrorhynchidae | benthopelagic | 34 TL | 4.5 | native |
| Acestrorhynchus falcirostris | Acestrorhynchidae | benthopelagic | 40 TL | 4.5 | native |
| Acestrorhynchus heterolepis | Acestrorhynchidae | benthopelagic | 40 TL | 4.5 | native |
| Acestrorhynchus lacustris | Acestrorhynchidae | benthopelagic | 33 TL | 4.6 | native |
| Acestrorhynchus microlepis | Acestrorhynchidae | benthopelagic | 32 TL | 4.5 | native |
| Acestrorhynchus minimus | Acestrorhynchidae | benthopelagic | 8 TL | 3.0 | native |
| Acestrorhynchus nasutus | Acestrorhynchidae | benthopelagic | 9 TL | 3.0 | native |
| Achiropsis nattereri | Achiridae | demersal | 17 TL | 3.4 | native |
| Acrobrycon ipanquianus | Characidae | benthopelagic | 13 TL | 3.2 | native |
| Adontosternarchus balaenops | Apteronotidae | benthopelagic | 25 TL | 3.4 | native |
| Aequidens diadema | Cichlidae | benthopelagic | 15 TL | 3.2 | native |
| Aequidens mauesanus | Cichlidae | benthopelagic | 17 TL | 3.2 | native |
| Aequidens pallidus | Cichlidae | benthopelagic | 18 TL | 3.2 | native |
| Aequidens patricki | Cichlidae | benthopelagic | 15 TL | 3.7 | native |
| Aequidens tetramerus | Cichlidae | benthopelagic | 25 TL | 3.2 | native |
| Agamyxis albomaculatus | Doradidae | demersal | 19 TL | 3.2 | misidentification |
| Agamyxis pectinifrons | Doradidae | demersal | 19 TL | 3.2 | native |
| Ageneiosus atronasus | Auchenipteridae | pelagic | 15 TL | 3.3 | native |
| Agoniates anchovia | Characidae | benthopelagic | 19 TL | 3.0 | native |
| Agoniates halecinus | Characidae | benthopelagic | 27 TL | 3.2 | native |
| Amaralia hypsiura | Aspredinidae | demersal | 17 TL | 3.2 | native |
| Amazonsprattus scintilla | Engraulidae | pelagic | 3 TL | 3.2 | native |
| Amblydoras monitor | Doradidae | demersal | 11 TL | 3.0 | native |
| Amblydoras nauticus | Doradidae | demersal | 10 TL | 3.2 | native |
| Ammocryptocharax elegans | Crenuchidae | benthopelagic | 4 TL | 3.2 | native |
| Ammocryptocharax minutus | Crenuchidae | benthopelagic | 3 TL | 3.0 | native |
| Anadoras grypus | Doradidae | demersal | 14 TL | 2.1 | native |
| Anadoras regani | Doradidae | demersal | 14 TL | 2.1 | native |
| Anchoviella alleni | Engraulidae | pelagic | 11 TL | 3.1 | native |
| Anchoviella carrikeri | Engraulidae | pelagic | 8 TL | 3.0 | native |
| Anchoviella guianensis | Engraulidae | pelagic | 9 TL | 3.0 | native |
| Anchoviella jamesi | Engraulidae | pelagic | 5 TL | 3.0 | native |
| Ancistrus dolichopterus | Loricariidae | demersal | 15 TL | 2.0 | native |
| Ancistrus latifrons | Loricariidae | demersal | 19 TL | 2.8 | native |
| Anodus elongatus | Hemiodontidae | pelagic | 37 TL | 2.7 | native |
| Anodus orinocensis | Hemiodontidae | pelagic | 34 TL | 2.7 | native |
| Anostomus anostomus | Anostomidae | benthopelagic | 16 TL | 3.0 | native |
| Anostomus ternetzi | Anostomidae | benthopelagic | 12 TL | 2.6 | endemic |
| Aphyocharax agassizii | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Aphyocharax alburnus | Characidae | benthopelagic | 6 TL | 3.2 | native |
| Aphyocharax analis | Characidae | benthopelagic | 6 TL | 3.2 | native |
| Aphyocharax nattereri | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Aphyocharax pusillus | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Aphyolebias obliquus | Rivulidae | benthopelagic | 6 TL | 3.1 | native |
| Aphyolebias peruensis | Rivulidae | benthopelagic | 10 TL | 3.1 | native |
| Apionichthys dumerili | Achiridae | demersal | 17 TL | 3.4 | native |
| Apistogramma agassizii | Cichlidae | benthopelagic | 6 TL | 3.5 | native |
| Apistogramma amoenum | Cichlidae | benthopelagic | 7 TL | 3.2 | native |
| Apistogramma cacatuoides | Cichlidae | benthopelagic | 7 TL | 3.3 | native |
| Apistogramma cruzi | Cichlidae | benthopelagic | 7 TL | 3.3 | native |
| Apistogramma eunotus | Cichlidae | benthopelagic | 7 TL | 3.3 | native |
| Apistogramma juruensis | Cichlidae | benthopelagic | 3 TL | 3.0 | native |
| Apistogramma luelingi | Cichlidae | benthopelagic | 5 TL | 3.2 | native |
| Apistogramma meinkeni | Cichlidae | benthopelagic | 6 TL | 3.5 | native |
| Apistogramma moae | Cichlidae | benthopelagic | 7 TL | 3.3 | native |
| Apistogramma nijsseni | Cichlidae | benthopelagic | 5 TL | 3.3 | native |
| Apistogramma payaminonis | Cichlidae | benthopelagic | 5 TL | 3.5 | native |
| Apistogramma personata | Cichlidae | benthopelagic | 6 TL | 3.3 | native |
| Apistogramma pertensis | Cichlidae | benthopelagic | 5 TL | 3.2 | native |
| Apistogramma resticulosa | Cichlidae | benthopelagic | 6 TL | 3.5 | native |
| Apistogramma rupununi | Cichlidae | benthopelagic | 6 TL | 3.5 | native |
| Apistogramma urteagai | Cichlidae | benthopelagic | 5 TL | 3.5 | native |
| Apistogrammoides pucallpaensis | Cichlidae | benthopelagic | 4 TL | 3.1 | native |
| Apistoloricaria ommation | Loricariidae | demersal | 12 TL | 2.2 | native |
| Apteronotus albifrons | Apteronotidae | benthopelagic | 50 TL | 3.0 | native |
| Apteronotus bonapartii | Apteronotidae | benthopelagic | 27 TL | 3.1 | native |
| Arapaima gigas | Osteoglossidae | demersal | 450 TL | 4.5 | native |
| Archolaemus blax | Sternopygidae | benthopelagic | 44 TL | 3.0 | native |
| Argonectes longiceps | Hemiodontidae | benthopelagic | 30 TL | 3.0 | native |
| Aspistor quadriscutis | Ariidae | benthopelagic | 50 TL | 3.5 | native |
| Aspredo aspredo | Aspredinidae | demersal | 47 TL | 3.0 | native |
| Astrodoras asterifrons | Doradidae | demersal | 10 TL | 3.0 | native |
| Astronotus crassipinnis | Cichlidae | benthopelagic | 30 TL | 3.0 | native |
| Astronotus ocellatus | Cichlidae | benthopelagic | 46 TL | 3.7 | native |
| Astyanax abramis | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Astyanax anterior | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax bourgeti | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax gracilior | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax kennedyi | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax longior | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax maximus | Characidae | benthopelagic | 16 TL | 3.0 | native |
| Astyanax poetzschkei | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Astyanax stilbe | Characidae | benthopelagic | 10 TL | 2.9 | native |
| Auchenipterichthys punctatus | Auchenipteridae | benthopelagic | 19 TL | 3.2 | native |
| Auchenipterichthys thoracatus | Auchenipteridae | benthopelagic | 11 TL | 3.1 | native |
| Auchenipterus brachyurus | Auchenipteridae | benthopelagic | 21 TL | 3.3 | native |
| Auchenipterus britskii | Auchenipteridae | benthopelagic | 18 TL | 3.1 | native |
| Auchenipterus nuchalis | Auchenipteridae | pelagic | 19 TL | 3.8 | native |
| Awaous flavus | Gobiidae | benthopelagic | 10 TL | 3.2 | native |
| Axelrodia lindeae | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Axelrodia stigmatias | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Bagre bagre | Ariidae | demersal | 55 TL | 4.0 | native |
| Bario steindachneri | Characidae | pelagic | 11 TL | 3.2 | native |
| Bathycetopsis oliveirai | Cetopsidae | demersal | 5 TL | 3.3 | native |
| Batrachoglanis raninus | Pseudopimelodidae | demersal | 25 TL | 3.7 | native |
| Batrachoglanis villosus | Pseudopimelodidae | demersal | 15 TL | 3.0 | native |
| Belonion apodion | Belonidae | benthopelagic | 7 TL | 3.3 | native |
| Biotodoma cupido | Cichlidae | benthopelagic | 12 TL | 3.0 | native |
| Biotodoma wavrini | Cichlidae | benthopelagic | 13 TL | 3.2 | native |
| Biotoecus opercularis | Cichlidae | benthopelagic | 10 TL | 3.0 | native |
| Bivibranchia fowleri | Hemiodontidae | benthopelagic | 18 TL | 3.0 | native |
| Bivibranchia velox | Hemiodontidae | benthopelagic | 19 TL | 2.9 | native |
| Boehlkea fredcochui | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Boulengerella cuvieri | Ctenoluciidae | pelagic | 98 TL | 3.2 | native |
| Boulengerella lateristriga | Ctenoluciidae | pelagic | 32 TL | 4.5 | native |
| Boulengerella lucius | Ctenoluciidae | pelagic | 52 TL | 2.9 | native |
| Boulengerella maculata | Ctenoluciidae | pelagic | 39 TL | 4.5 | native |
| Boulengerella xyrekes | Ctenoluciidae | pelagic | 47 TL | 2.5 | native |
| Brachychalcinus copei | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Brachychalcinus nummus | Characidae | benthopelagic | 11 TL | 3.0 | native |
| Brachyhypopomus brevirostris | Hypopomidae | benthopelagic | 35 TL | 3.0 | native |
| Brachyhypopomus pinnicaudatus | Hypopomidae | benthopelagic | 19 TL | 2.6 | native |
| Brachyplatystoma juruense | Pimelodidae | demersal | 60 TL | 4.5 | native |
| Brachyplatystoma vaillantii | Pimelodidae | demersal | 150 TL | 4.5 | native |
| Brycon amazonicus | Characidae | benthopelagic | 57 TL | 2.5 | native |
| Brycon cephalus | Characidae | benthopelagic | 27 TL | 2.0 | native |
| Brycon falcatus | Characidae | benthopelagic | 37 TL | 2.8 | native |
| Brycon melanopterus | Characidae | benthopelagic | 37 TL | 2.8 | native |
| Brycon pesu | Characidae | benthopelagic | 15 TL | 3.0 | native |
| Bryconacidnus ellisi | Characidae | pelagic | 5 TL | 3.0 | native |
| Bryconacidnus paipayensis | Characidae | pelagic | 7 TL | 3.0 | native |
| Bryconamericus alfredae | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus caucanus | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus diaphanus | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus grosvenori | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus osgoodi | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus pachacuti | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus phoenicopterus | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus simus | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Bryconamericus thomasi | Characidae | benthopelagic | 9 TL | 2.9 | native |
| Bryconella pallidifrons | Characidae | pelagic | 3 TL | 3.0 | native |
| Bryconexodon juruenae | Characidae | benthopelagic | 16 TL | 3.0 | native |
| Bryconexodon trombetasi | Characidae | benthopelagic | 14 TL | 3.2 | native |
| Bryconops affinis | Characidae | benthopelagic | 12 TL | 2.7 | native |
| Bryconops alburnoides | Characidae | benthopelagic | 12 TL | 3.2 | native |
| Bryconops caudomaculatus | Characidae | benthopelagic | 13 TL | 4.5 | native |
| Bryconops melanurus | Characidae | benthopelagic | 15 TL | 3.2 | native |
| Bujurquina apoparuana | Cichlidae | benthopelagic | 10 TL | 3.5 | native |
| Bujurquina cordemadi | Cichlidae | benthopelagic | 8 TL | 3.4 | native |
| Bujurquina eurhinus | Cichlidae | benthopelagic | 11 TL | 3.3 | native |
| Bujurquina hophrys | Cichlidae | benthopelagic | 11 TL | 3.0 | native |
| Bujurquina huallagae | Cichlidae | benthopelagic | 11 TL | 4.5 | native |
| Bujurquina labiosa | Cichlidae | benthopelagic | 7 TL | 3.1 | native |
| Bujurquina megalospilus | Cichlidae | benthopelagic | 9 TL | 3.5 | native |
| Bujurquina moriorum | Cichlidae | benthopelagic | 12 TL | 3.2 | native |
| Bujurquina ortegai | Cichlidae | benthopelagic | 14 TL | 3.0 | native |
| Bujurquina peregrinabunda | Cichlidae | benthopelagic | 14 TL | 3.2 | native |
| Bujurquina robusta | Cichlidae | benthopelagic | 11 TL | 3.3 | native |
| Bujurquina syspilus | Cichlidae | benthopelagic | 13 TL | 3.0 | native |
| Bujurquina tambopatae | Cichlidae | benthopelagic | 10 TL | 3.3 | native |
| Bujurquina vittata | Cichlidae | benthopelagic | 11 TL | 3.0 | native |
| Bunocephalus aleuropsis | Aspredinidae | demersal | 12 TL | 2.6 | native |
| Bunocephalus amazonicus | Aspredinidae | demersal | 6 TL | 3.0 | native |
| Bunocephalus bifidus | Aspredinidae | demersal | 6 TL | 3.0 | native |
| Bunocephalus coracoideus | Aspredinidae | demersal | 14 TL | 3.2 | native |
| Bunocephalus knerii | Aspredinidae | demersal | 16 TL | 3.2 | native |
| Bunocephalus quadriradiatus | Aspredinidae | demersal | 4 TL | 3.0 | native |
| Bunocephalus verrucosus | Aspredinidae | demersal | 12 TL | 2.5 | native |
| Caenotropus labyrinthicus | Chilodontidae | demersal | 19 TL | 2.8 | native |
| Calophysus macropterus | Pimelodidae | demersal | 40 TL | 4.5 | native |
| Caquetaia spectabilis | Cichlidae | benthopelagic | 21 TL | 3.1 | native |
| Carnegiella marthae | Gasteropelecidae | pelagic | 4 TL | 3.2 | native |
| Carnegiella myersi | Gasteropelecidae | pelagic | 3 TL | 3.0 | native |
| Carnegiella schereri | Gasteropelecidae | pelagic | 4 TL | 3.0 | native |
| Carnegiella strigata | Gasteropelecidae | pelagic | 5 TL | 3.3 | native |
| Cathorops phrygiatus | Ariidae | demersal | 30 TL | 3.1 | native |
| Cathorops rugispinis | Ariidae | demersal | 45 TL | 3.0 | native |
| Catoprion mento | Characidae | pelagic | 19 TL | 3.6 | native |
| Centrochir crocodili | Doradidae | demersal | 26 TL | 3.0 | misidentification |
| Centrodoras brachiatus | Doradidae | demersal | 41 TL | 3.0 | native |
| Centromochlus existimatus | Auchenipteridae | demersal | 9 TL | 3.0 | native |
| Centromochlus heckelii | Auchenipteridae | demersal | 9 TL | 3.0 | native |
| Ceratobranchia binghami | Characidae | pelagic | 7 TL | 3.0 | native |
| Ceratobranchia obtusirostris | Characidae | pelagic | 7 TL | 3.0 | native |
| Cetopsis coecutiens | Cetopsidae | benthopelagic | 33 TL | 3.5 | native |
| Cetopsis parma | Cetopsidae | benthopelagic | 21 TL | 3.0 | native |
| Cetopsorhamdia phantasia | Heptapteridae | demersal | 5 TL | 3.0 | native |
| Chaetobranchopsis australis | Cichlidae | benthopelagic | 15 TL | 3.5 | native |
| Chaetobranchopsis orbicularis | Cichlidae | benthopelagic | 15 TL | 3.3 | endemic |
| Chaetobranchus flavescens | Cichlidae | benthopelagic | 26 TL | 3.4 | endemic |
| Chaetobranchus semifasciatus | Cichlidae | benthopelagic | 29 TL | 3.6 | native |
| Chalceus erythrurus | Characidae | pelagic | 27 TL | 3.4 | native |
| Chalceus macrolepidotus | Characidae | pelagic | 30 TL | 3.5 | native |
| Characidium declivirostre | Crenuchidae | benthopelagic | 10 TL | 3.0 | native |
| Characidium etheostoma | Crenuchidae | benthopelagic | 5 TL | 3.1 | native |
| Characidium roesseli | Crenuchidae | benthopelagic | 4 TL | 3.0 | native |
| Characidium steindachneri | Crenuchidae | benthopelagic | 6 TL | 3.0 | native |
| Charax condei | Characidae | benthopelagic | 7 TL | 4.5 | native |
| Charax hemigrammus | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Charax tectifer | Characidae | benthopelagic | 13 TL | 3.9 | native |
| Charax unimaculatus | Characidae | benthopelagic | 11 TL | 3.4 | native |
| Chasmocranus quadrizonatus | Heptapteridae | demersal | 15 TL | 3.2 | native |
| Cheirocerus goeldii | Pimelodidae | demersal | 19 TL | 3.0 | native |
| Chilodus gracilis | Chilodontidae | demersal | 8 TL | 2.9 | native |
| Chilodus punctatus | Chilodontidae | pelagic | 10 TL | 2.8 | native |
| Chrysobrycon hesperus | Characidae | pelagic | 10 TL | 3.2 | native |
| Chrysobrycon myersi | Characidae | pelagic | 6 TL | 3.2 | native |
| Cichla monoculus | Cichlidae | benthopelagic | 41 TL | 4.1 | native |
| Cichla orinocensis | Cichlidae | benthopelagic | 76 TL | 4.4 | native |
| Cichla temensis | Cichlidae | benthopelagic | 99 TL | 4.5 | native |
| Cichlasoma amazonarum | Cichlidae | benthopelagic | 14 TL | 2.8 | endemic |
| Cichlasoma araguaiense | Cichlidae | benthopelagic | 12 TL | 3.2 | native |
| Cichlasoma bimaculatum | Cichlidae | benthopelagic | 30 TL | 3.6 | native |
| Cichlasoma boliviense | Cichlidae | benthopelagic | 14 TL | 3.2 | native |
| Clupeacharax anchoveoides | Characidae | pelagic | 8 TL | 3.0 | native |
| Colomesus asellus | Tetraodontidae | demersal | 14 TL | 3.0 | native |
| Colomesus psittacus | Tetraodontidae | demersal | 30 TL | 3.6 | native |
| Compsaraia compsus | Apteronotidae | benthopelagic | 34 TL | 3.0 | native |
| Copeina guttata | Lebiasinidae | pelagic | 10 TL | 3.1 | native |
| Copeina osgoodi | Lebiasinidae | pelagic | 7 TL | 3.2 | native |
| Copella arnoldi | Lebiasinidae | benthopelagic | 5 TL | 3.3 | native |
| Copella metae | Lebiasinidae | benthopelagic | 5 TL | 3.5 | native |
| Copella nattereri | Lebiasinidae | benthopelagic | 6 TL | 3.3 | native |
| Copella nigrofasciata | Lebiasinidae | benthopelagic | 6 TL | 3.3 | native |
| Copella vilmae | Lebiasinidae | benthopelagic | 6 TL | 3.3 | native |
| Corydoras ambiacus | Callichthyidae | demersal | 6 TL | 2.9 | native |
| Corydoras amphibelus | Callichthyidae | demersal | 6 TL | 2.9 | native |
| Corydoras arcuatus | Callichthyidae | demersal | 5 TL | 3.0 | native |
| Corydoras armatus | Callichthyidae | demersal | 7 TL | 2.9 | native |
| Corydoras elegans | Callichthyidae | demersal | 7 TL | 2.9 | native |
| Corydoras eques | Callichthyidae | demersal | 6 TL | 2.9 | native |
| Corydoras fowleri | Callichthyidae | demersal | 8 TL | 2.9 | native |
| Corydoras hastatus | Callichthyidae | demersal | 3 TL | 3.0 | native |
| Corydoras julii | Callichthyidae | demersal | 7 TL | 3.0 | native |
| Corydoras leucomelas | Callichthyidae | demersal | 6 TL | 3.0 | native |
| Corydoras melini | Callichthyidae | demersal | 7 TL | 2.9 | native |
| Corydoras punctatus | Callichthyidae | demersal | 9 TL | 2.9 | native |
| Corydoras rabauti | Callichthyidae | demersal | 7 TL | 3.0 | native |
| Corydoras reticulatus | Callichthyidae | demersal | 8 TL | 2.9 | native |
| Corydoras trilineatus | Callichthyidae | demersal | 8 TL | 3.0 | native |
| Creagrutus amoenus | Characidae | benthopelagic | 12 TL | 3.2 | native |
| Creagrutus beni | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Creagrutus cochui | Characidae | benthopelagic | 10 TL | 3.0 | native |
| Creagrutus melanzonus | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Creagrutus peruanus | Characidae | benthopelagic | 11 TL | 3.0 | native |
| Crenicara latruncularium | Cichlidae | benthopelagic | 11 TL | 3.0 | native |
| Crenicara punctulatum | Cichlidae | benthopelagic | 13 TL | 3.2 | native |
| Crenicichla acutirostris | Cichlidae | benthopelagic | 21 TL | 3.2 | native |
| Crenicichla anthurus | Cichlidae | benthopelagic | 28 TL | 2.8 | native |
| Crenicichla cyanonotus | Cichlidae | benthopelagic | 19 TL | 3.2 | native |
| Crenicichla geayi | Cichlidae | benthopelagic | 16 TL | 3.2 | native |
| Crenicichla inpa | Cichlidae | benthopelagic | 21 TL | 3.2 | native |
| Crenicichla johanna | Cichlidae | benthopelagic | 35 TL | 3.1 | native |
| Crenicichla lepidota | Cichlidae | benthopelagic | 22 TL | 3.6 | native |
| Crenicichla lucius | Cichlidae | benthopelagic | 21 TL | 3.2 | native |
| Crenicichla macrophthalma | Cichlidae | benthopelagic | 25 TL | 3.4 | native |
| Crenicichla marmorata | Cichlidae | benthopelagic | 35 TL | 3.1 | native |
| Crenicichla notophthalmus | Cichlidae | benthopelagic | 10 TL | 3.2 | native |
| Crenicichla percna | Cichlidae | benthopelagic | 27 TL | 3.1 | native |
| Crenicichla proteus | Cichlidae | benthopelagic | 19 TL | 3.2 | native |
| Crenicichla reticulata | Cichlidae | benthopelagic | 27 TL | 3.1 | endemic |
| Crenicichla sedentaria | Cichlidae | benthopelagic | 27 TL | 3.8 | native |
| Crenicichla semicincta | Cichlidae | benthopelagic | 21 TL | 3.2 | native |
| Crenuchus spilurus | Crenuchidae | pelagic | 6 TL | 3.3 | native |
| Ctenobrycon hauxwellianus | Characidae | pelagic | 8 TL | 3.0 | endemic |
| Curimata aspera | Curimatidae | benthopelagic | 26 TL | native |
| Curimata cisandina | Curimatidae | benthopelagic | 15 TL | 2.0 | native |
| Curimata cyprinoides | Curimatidae | benthopelagic | 26 TL | 2.4 | native |
| Curimata inornata | Curimatidae | benthopelagic | 17 TL | 2.0 | native |
| Curimata knerii | Curimatidae | benthopelagic | 22 TL | 2.7 | native |
| Curimata ocellata | Curimatidae | benthopelagic | 28 TL | 2.3 | native |
| Curimata roseni | Curimatidae | benthopelagic | 18 TL | 2.0 | native |
| Curimata vittata | Curimatidae | benthopelagic | 23 TL | 2.0 | native |
| Curimatella alburna | Curimatidae | benthopelagic | 23 TL | 2.5 | native |
| Curimatella dorsalis | Curimatidae | benthopelagic | 14 TL | native |
| Curimatella immaculata | Curimatidae | benthopelagic | 12 TL | 2.3 | native |
| Curimatella meyeri | Curimatidae | benthopelagic | 20 TL | native |
| Curimatopsis crypticus | Curimatidae | benthopelagic | 7 TL | 3.1 | native |
| Curimatopsis evelynae | Curimatidae | benthopelagic | 5 TL | 3.2 | native |
| Curimatopsis macrolepis | Curimatidae | benthopelagic | 8 TL | 2.6 | native |
| Cynodon gibbus | Cynodontidae | pelagic | 35 TL | 2.7 | native |
| Cynodon septenarius | Cynodontidae | pelagic | 39 TL | 2.7 | native |
| Cynopotamus amazonus | Characidae | benthopelagic | 21 TL | 3.0 | native |
| Cyphocharax abramoides | Curimatidae | benthopelagic | 26 TL | native |
| Cyphocharax mestomyllon | Curimatidae | benthopelagic | 6 TL | 3.0 | native |
| Cyphocharax multilineatus | Curimatidae | benthopelagic | 14 TL | native |
| Cyphocharax saladensis | Curimatidae | benthopelagic | 9 TL | 2.0 | native |
| Dianema longibarbis | Callichthyidae | demersal | 10 TL | 3.0 | native |
| Dicrossus filamentosus | Cichlidae | benthopelagic | 5 TL | 3.0 | native |
| Dicrossus maculatus | Cichlidae | benthopelagic | 6 TL | 3.0 | native |
| Distocyclus conirostris | Sternopygidae | benthopelagic | 50 TL | 3.0 | native |
| Doras carinatus | Doradidae | demersal | 37 TL | 3.0 | native |
| Doras punctatus | Doradidae | demersal | 14 TL | 2.1 | native |
| Eigenmannia nigra | Sternopygidae | benthopelagic | 48 TL | 3.0 | native |
| Eigenmannia virescens | Sternopygidae | benthopelagic | 35 TL | 3.0 | native |
| Elachocharax junki | Crenuchidae | pelagic | 3 TL | 3.0 | native |
| Elachocharax mitopterus | Crenuchidae | pelagic | 2 TL | 3.3 | native |
| Elachocharax pulcher | Crenuchidae | pelagic | 3 TL | 3.1 | native |
| Electrophorus electricus | Gymnotidae | benthopelagic | 305 TL | 4.3 | native |
| Engraulisoma taeniatum | Characidae | pelagic | 6 TL | 3.0 | native |
| Epapterus dispilurus | Auchenipteridae | demersal | 16 TL | 4.5 | native |
| Exodon paradoxus | Characidae | pelagic | 10 TL | 3.8 | native |
| Farlowella amazona | Loricariidae | demersal | 28 TL | native |
| Farlowella nattereri | Loricariidae | demersal | 33 TL | 2.8 | native |
| Farlowella platoryncha | Loricariidae | demersal | 24 TL | 2.8 | native |
| Farlowella schreitmuelleri | Loricariidae | demersal | 23 TL | 2.8 | native |
| Fluviphylax simplex | Poeciliidae | benthopelagic | 2 TL | 2.6 | native |
| Galeocharax gulo | Characidae | benthopelagic | 27 TL | 3.2 | native |
| Gasteropelecus levis | Gasteropelecidae | pelagic | 5 TL | 3.3 | native |
| Gasteropelecus sternicla | Gasteropelecidae | pelagic | 5 TL | 3.3 | native |
| Gelanoglanis nanonocticolus | Auchenipteridae | pelagic | 3 TL | 3.0 | native |
| Geophagus megasema | Cichlidae | benthopelagic | 22 TL | 3.5 | native |
| Geophagus proximus | Cichlidae | benthopelagic | 28 TL | 3.6 | endemic |
| Glyptoperichthys gibbiceps | Loricariidae | demersal | 50 TL | 2.0 | native |
| Glyptoperichthys lituratus | Loricariidae | demersal | 46 TL | 2.0 | native |
| Glyptoperichthys punctatus | Loricariidae | demersal | 35 TL | 2.0 | native |
| Glyptoperichthys scrophus | Loricariidae | demersal | 34 TL | 2.7 | native |
| Glyptoperichthys xinguensis | Loricariidae | demersal | 33 TL | 2.7 | native |
| Gnathocharax steindachneri | Characidae | pelagic | 7 TL | 3.2 | native |
| Gobionellus thoropsis | Gobiidae | demersal | 6 TL | 3.4 | native |
| Goeldiella eques | Heptapteridae | demersal | 17 TL | 3.0 | native |
| Goslinia platynema | Pimelodidae | demersal | 122 TL | 4.5 | native |
| Guianacara geayi | Cichlidae | benthopelagic | 11 TL | 3.3 | native |
| Gymnocorymbus thayeri | Characidae | pelagic | 7 TL | 3.0 | native |
| Gymnotus cataniapo | Gymnotidae | benthopelagic | 32 TL | 3.0 | native |
| Gymnotus pedanopterus | Gymnotidae | benthopelagic | 29 TL | 3.0 | native |
| Gymnotus stenoleucus | Gymnotidae | benthopelagic | 15 TL | 2.5 | native |
| Haemomaster venezuelae | Trichomycteridae | demersal | 9 TL | 3.1 | native |
| Hassar orestis | Doradidae | demersal | 26 TL | 3.4 | native |
| Helogenes marmoratus | Cetopsidae | demersal | 9 TL | 3.2 | native |
| Hemibrycon helleri | Characidae | benthopelagic | 13 TL | 3.0 | native |
| Hemibrycon huambonicus | Characidae | benthopelagic | 11 TL | 3.2 | native |
| Hemibrycon jelskii | Characidae | benthopelagic | 11 TL | 3.2 | native |
| Hemibrycon polyodon | Characidae | benthopelagic | 21 TL | 3.1 | native |
| Hemibrycon tridens | Characidae | benthopelagic | 11 TL | 3.2 | native |
| Hemidoras morrisi | Doradidae | demersal | 18 TL | 3.3 | native |
| Hemidoras stenopeltis | Doradidae | demersal | 16 TL | 3.0 | native |
| Hemigrammus analis | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hemigrammus belottii | Characidae | benthopelagic | 4 TL | 3.2 | native |
| Hemigrammus boesemani | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hemigrammus coeruleus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hemigrammus cupreus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hemigrammus elegans | Characidae | benthopelagic | 5 TL | 3.0 | endemic |
| Hemigrammus gracilis | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hemigrammus haraldi | Characidae | benthopelagic | 4 TL | 2.8 | native |
| Hemigrammus hyanuary | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hemigrammus levis | Characidae | benthopelagic | 5 TL | 3.1 | endemic |
| Hemigrammus luelingi | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Hemigrammus lunatus | Characidae | benthopelagic | 5 TL | 3.1 | native |
| Hemigrammus marginatus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hemigrammus microstomus | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Hemigrammus ocellifer | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Hemigrammus pretoensis | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hemigrammus pulcher | Characidae | benthopelagic | 4 TL | 2.8 | native |
| Hemigrammus rhodostomus | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Hemigrammus rodwayi | Characidae | benthopelagic | 6 TL | 3.0 | endemic |
| Hemigrammus schmardae | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hemigrammus stictus | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hemigrammus unilineatus | Characidae | benthopelagic | 6 TL | 3.3 | native |
| Hemiodontichthys acipenserinus | Loricariidae | demersal | 17 TL | 3.3 | native |
| Hemiodus amazonum | Hemiodontidae | benthopelagic | 20 TL | 3.0 | native |
| Hemiodus argenteus | Hemiodontidae | benthopelagic | 29 TL | 3.0 | native |
| Hemiodus atranalis | Hemiodontidae | benthopelagic | 12 TL | 3.0 | native |
| Hemiodus gracilis | Hemiodontidae | benthopelagic | 20 TL | 2.9 | native |
| Hemiodus immaculatus | Hemiodontidae | benthopelagic | 31 TL | 2.7 | native |
| Hemiodus microlepis | Hemiodontidae | benthopelagic | 30 TL | 3.0 | native |
| Hemiodus quadrimaculatus | Hemiodontidae | benthopelagic | 16 TL | 2.6 | native |
| Hemiodus semitaeniatus | Hemiodontidae | benthopelagic | 20 TL | 2.9 | native |
| Hemiodus sterni | Hemiodontidae | benthopelagic | 10 TL | 3.0 | native |
| Hemiodus thayeria | Hemiodontidae | benthopelagic | 11 TL | 3.0 | native |
| Hemiodus unimaculatus | Hemiodontidae | benthopelagic | 27 TL | 2.0 | native |
| Hemiodus vorderwinkleri | Hemiodontidae | benthopelagic | 9 TL | 3.0 | native |
| Hemipsilichthys regani | Loricariidae | demersal | 12 TL | 2.1 | native |
| Henonemus macrops | Trichomycteridae | demersal | 13 TL | 3.0 | native |
| Heroina isonycterina | Cichlidae | benthopelagic | 13 TL | 3.2 | native |
| Heros efasciatus | Cichlidae | benthopelagic | 18 TL | 2.9 | native |
| Heros notatus | Cichlidae | benthopelagic | 19 TL | 3.4 | native |
| Heros severus | Cichlidae | benthopelagic | 25 TL | 2.0 | native |
| Heros spurius | Cichlidae | benthopelagic | 15 TL | 3.0 | native |
| Heterocharax leptogrammus | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Heterocharax macrolepis | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Heterocharax virgulatus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Hexanematichthys couma | Ariidae | demersal | 97 TL | 3.5 | native |
| Hoplarchus psittacus | Cichlidae | benthopelagic | 32 TL | 3.7 | native |
| Hoplias malabaricus | Erythrinidae | benthopelagic | 60 TL | 4.5 | native |
| Hoplocharax goethei | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Hoplosternum littorale | Callichthyidae | demersal | 20 TL | 2.7 | native |
| Hydrolycus armatus | Cynodontidae | pelagic | 81 TL | 2.9 | native |
| Hydrolycus scomberoides | Cynodontidae | benthopelagic | 117 TL | 2.9 | native |
| Hydrolycus tatauaia | Cynodontidae | pelagic | 56 TL | 2.5 | native |
| Hypancistrus inspector | Loricariidae | benthopelagic | 16 TL | 2.0 | native |
| Hyphessobrycon agulha | Characidae | benthopelagic | 6 TL | 2.9 | native |
| Hyphessobrycon bentosi | Characidae | benthopelagic | 6 TL | 2.9 | native |
| Hyphessobrycon copelandi | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hyphessobrycon eques | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Hyphessobrycon erythrostigma | Characidae | benthopelagic | 8 TL | 2.8 | native |
| Hyphessobrycon gracilior | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Hyphessobrycon heterorhabdus | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hyphessobrycon hildae | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Hyphessobrycon loretoensis | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Hyphessobrycon melazonatus | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hyphessobrycon peruvianus | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Hyphessobrycon pulchripinnis | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hyphessobrycon pyrrhonotus | Characidae | benthopelagic | 6 TL | 2.8 | native |
| Hyphessobrycon robustulus | Characidae | benthopelagic | 5 TL | 3.0 | endemic |
| Hyphessobrycon rosaceus | Characidae | benthopelagic | 5 TL | 2.9 | native |
| Hyphessobrycon scholzei | Characidae | benthopelagic | 4 TL | 2.9 | endemic |
| Hyphessobrycon socolofi | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Hyphessobrycon stramineus | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hyphessobrycon sweglesi | Characidae | benthopelagic | 4 TL | 3.2 | native |
| Hyphessobrycon takasei | Characidae | benthopelagic | 4 TL | 2.9 | native |
| Hyphessobrycon tenuis | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Hyphessobrycon tukunai | Characidae | benthopelagic | 3 TL | 2.9 | native |
| Hypoclinemus mentalis | Achiridae | demersal | 17 TL | 3.4 | native |
| Hypodoras forficulatus | Doradidae | demersal | 13 TL | 2.1 | native |
| Hypophthalmus edentatus | Pimelodidae | pelagic | 58 TL | 3.2 | native |
| Hypoptopoma carinatum | Loricariidae | demersal | 8 TL | 2.1 | native |
| Hypoptopoma gulare | Loricariidae | demersal | 13 TL | 2.8 | native |
| Hypoptopoma joberti | Loricariidae | demersal | 8 TL | 2.5 | native |
| Hypoptopoma psilogaster | Loricariidae | demersal | 9 TL | 2.5 | native |
| Hypoptopoma steindachneri | Loricariidae | demersal | 13 TL | 2.1 | native |
| Hypoptopoma thoracatum | Loricariidae | demersal | 8 TL | 2.0 | native |
| Hypopygus lepturus | Hypopomidae | benthopelagic | 8 TL | 3.0 | native |
| Hypostomus carinatus | Loricariidae | demersal | 31 TL | 2.1 | native |
| Hypostomus virescens | Loricariidae | demersal | 9 TL | 3.2 | native |
| Hypselecara temporalis | Cichlidae | benthopelagic | 19 TL | 3.2 | native |
| Iguanodectes purusi | Characidae | benthopelagic | 10 TL | 3.0 | native |
| Iguanodectes rachovii | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Iguanodectes spilurus | Characidae | benthopelagic | 13 TL | 3.2 | native |
| Ilisha amazonica | Clupeidae | pelagic | 22 TL | 3.4 | native |
| Imparfinis peruanus | Heptapteridae | demersal | 12 TL | 3.2 | native |
| Jupiaba anteroides | Characidae | benthopelagic | 10 TL | 3.0 | native |
| Jupiaba zonata | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Klausewitzia ritae | Crenuchidae | pelagic | 4 TL | 3.0 | native |
| Knodus breviceps | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Knodus delta | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Knodus gamma | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Knodus megalops | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Knodus moenkhausii | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Laemolyta garmani | Anostomidae | benthopelagic | 27 TL | 2.5 | native |
| Laemolyta taeniata | Anostomidae | benthopelagic | 36 TL | 2.7 | native |
| Laetacara curviceps | Cichlidae | benthopelagic | 10 TL | 3.4 | native |
| Laetacara dorsigera | Cichlidae | benthopelagic | 6 TL | 3.1 | native |
| Laetacara flavilabris | Cichlidae | benthopelagic | 10 TL | 3.5 | native |
| Laetacara thayeri | Cichlidae | benthopelagic | 12 TL | 3.0 | native |
| Lasiancistrus heteracanthus | Loricariidae | demersal | 19 TL | native |
| Leiarius marmoratus | Pimelodidae | demersal | 60 TL | 4.5 | native |
| Lepidosiren paradoxa | Lepidosirenidae | demersal | 125 TL | 2.8 | native |
| Leporellus vittatus | Anostomidae | benthopelagic | 30 TL | 2.5 | native |
| Leporinus agassizii | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus alternus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus brunneus | Anostomidae | benthopelagic | 32 TL | native |
| Leporinus cylindriformis | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus holostictus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus moralesi | Anostomidae | benthopelagic | 30 TL | 2.5 | native |
| Leporinus multifasciatus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus paralternus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus pellegrinii | Anostomidae | benthopelagic | 12 TL | 2.0 | native |
| Leporinus striatus | Anostomidae | benthopelagic | 25 TL | 2.0 | native |
| Leporinus trifasciatus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leporinus wolfei | Anostomidae | benthopelagic | 30 TL | 2.5 | native |
| Leporinus yophorus | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Leptagoniates steindachneri | Characidae | pelagic | 10 TL | 3.2 | native |
| Lepthoplosternum altamazonicum | Callichthyidae | demersal | 7 TL | 3.0 | native |
| Leptobrycon jatuaranae | Characidae | benthopelagic | 12 TL | 3.0 | native |
| Leptocharacidium omospilus | Crenuchidae | pelagic | 9 TL | 3.1 | native |
| Leptodoras acipenserinus | Doradidae | demersal | 25 TL | 3.0 | native |
| Leptodoras juruensis | Doradidae | demersal | 36 TL | 3.5 | native |
| Leptodoras linnelli | Doradidae | demersal | 29 TL | 3.4 | native |
| Leptodoras myersi | Doradidae | demersal | 10 TL | 3.0 | native |
| Limatulichthys griseus | Loricariidae | demersal | 22 TL | 2.8 | native |
| Liposarcus disjunctivus | Loricariidae | demersal | 44 TL | 2.1 | native |
| Liposarcus multiradiatus | Loricariidae | demersal | 50 TL | 2.0 | native |
| Liposarcus pardalis | Loricariidae | demersal | 40 TL | 2.1 | endemic |
| Lithodoras dorsalis | Doradidae | demersal | 100 TL | 2.0 | native |
| Loricaria cataphracta | Loricariidae | demersal | 36 TL | 2.8 | native |
| Loricaria clavipinna | Loricariidae | demersal | 22 TL | 2.8 | native |
| Loricaria parnahybae | Loricariidae | demersal | 20 TL | 2.8 | native |
| Loricariichthys nudirostris | Loricariidae | demersal | 26 TL | 2.8 | native |
| Lycengraulis grossidens | Engraulidae | pelagic | 28 TL | 3.6 | native |
| Magosternarchus duccis | Apteronotidae | benthopelagic | 23 TL | 3.6 | native |
| Magosternarchus raptor | Apteronotidae | benthopelagic | 20 TL | 3.5 | native |
| Mastiglanis asopos | Heptapteridae | demersal | 17 TL | 3.0 | native |
| Megalechis personata | Callichthyidae | demersal | 16 TL | 3.0 | native |
| Megalechis thoracata | Callichthyidae | demersal | 19 TL | 2.9 | native |
| Megalocentor echthrus | Trichomycteridae | benthopelagic | 11 TL | 3.2 | native |
| Megalodoras uranoscopus | Doradidae | demersal | 74 TL | 2.7 | native |
| Megalonema platanum | Pimelodidae | demersal | 18 TL | 3.0 | native |
| Melanocharacidium compressus | Crenuchidae | benthopelagic | 4 TL | 3.0 | native |
| Melanocharacidium depressum | Crenuchidae | benthopelagic | 4 TL | 3.0 | native |
| Melanocharacidium dispilomma | Crenuchidae | benthopelagic | 5 TL | 3.1 | native |
| Melanocharacidium melanopteron | Crenuchidae | benthopelagic | 9 TL | 3.0 | native |
| Melanocharacidium nigrum | Crenuchidae | benthopelagic | 8 TL | 3.1 | native |
| Melanocharacidium pectorale | Crenuchidae | benthopelagic | 5 TL | 3.0 | native |
| Mesonauta acora | Cichlidae | benthopelagic | 9 TL | 3.3 | native |
| Mesonauta festivus | Cichlidae | benthopelagic | 10 TL | 2.9 | native |
| Mesonauta guyanae | Cichlidae | benthopelagic | 13 TL | 3.2 | native |
| Mesonauta insignis | Cichlidae | benthopelagic | 12 TL | 3.4 | native |
| Mesonauta mirificus | Cichlidae | benthopelagic | 12 TL | 3.0 | native |
| Metynnis argenteus | Characidae | pelagic | 14 TL | 2.1 | native |
| Metynnis hypsauchen | Characidae | pelagic | 15 TL | 2.1 | native |
| Metynnis lippincottianus | Characidae | pelagic | 13 TL | 3.1 | native |
| Metynnis luna | Characidae | pelagic | 10 TL | 3.2 | native |
| Metynnis maculatus | Characidae | pelagic | 18 TL | 2.0 | native |
| Microcharacidium weitzmani | Crenuchidae | pelagic | 2 TL | 3.4 | native |
| Microgenys lativirgata | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Microgenys weyrauchi | Characidae | benthopelagic | 35 TL | 3.1 | native |
| Microglanis zonatus | Pseudopimelodidae | demersal | 3 TL | 3.1 | native |
| Micromyzon akamai | Aspredinidae | demersal | 2 TL | 3.2 | native |
| Microschemobrycon callops | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Microschemobrycon geisleri | Characidae | benthopelagic | 3 TL | 3.0 | native |
| Microsternarchus bilineatus | Hypopomidae | benthopelagic | 12 TL | 2.8 | native |
| Mikrogeophagus altispinosus | Cichlidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia agnesae | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Moenkhausia atahualpiana | Characidae | benthopelagic | 11 TL | 3.1 | native |
| Moenkhausia barbouri | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Moenkhausia ceros | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia chrysargyrea | Characidae | benthopelagic | 15 TL | 3.2 | native |
| Moenkhausia collettii | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia cotinho | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Moenkhausia dichroura | Characidae | benthopelagic | 10 TL | 3.2 | native |
| Moenkhausia diktyota | Characidae | pelagic | 7 TL | 3.0 | native |
| Moenkhausia gracilima | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia grandisquamis | Characidae | benthopelagic | 13 TL | 3.2 | native |
| Moenkhausia intermedia | Characidae | benthopelagic | 10 TL | 2.7 | endemic |
| Moenkhausia jamesi | Characidae | benthopelagic | 11 TL | 3.1 | native |
| Moenkhausia justae | Characidae | benthopelagic | 13 TL | 3.2 | native |
| Moenkhausia latissima | Characidae | pelagic | 11 TL | 3.1 | native |
| Moenkhausia lepidura | Characidae | benthopelagic | 10 TL | 3.2 | native |
| Moenkhausia levidorsa | Characidae | pelagic | 0 TL | native |
| Moenkhausia megalops | Characidae | benthopelagic | 8 TL | 3.0 | native |
| Moenkhausia melogramma | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia newtoni | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Moenkhausia oligolepis | Characidae | benthopelagic | 122 TL | 3.2 | native |
| Moenkhausia ovalis | Characidae | benthopelagic | 10 TL | 3.2 | native |
| Moenkhausia robertsi | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia simulata | Characidae | benthopelagic | 9 TL | 3.0 | native |
| Moenkhausia takasei | Characidae | benthopelagic | 7 TL | 3.0 | native |
| Moenkhausia tridentata | Characidae | benthopelagic | 11 TL | 3.1 | native |
| Monocirrhus polyacanthus | Nandidae | benthopelagic | 8 TL | 4.5 | native |
| Myleus levis | Characidae | benthopelagic | 30 TL | 3.3 | native |
| Myleus lobatus | Characidae | benthopelagic | 30 TL | 3.3 | native |
| Myleus pacu | Characidae | benthopelagic | 20 TL | 2.0 | native |
| Myleus rhomboidalis | Characidae | benthopelagic | 46 TL | 2.7 | native |
| Myleus rubripinnis | Characidae | benthopelagic | 39 TL | 2.0 | native |
| Myleus schomburgkii | Characidae | benthopelagic | 52 TL | 2.8 | native |
| Myleus setiger | Characidae | benthopelagic | 33 TL | 2.3 | native |
| Myleus torquatus | Characidae | benthopelagic | 30 TL | 3.3 | native |
| Mylossoma aureum | Characidae | benthopelagic | 20 TL | 3.3 | native |
| Mylossoma duriventre | Characidae | benthopelagic | 31 TL | 3.3 | native |
| Myoglanis koepckei | Heptapteridae | demersal | 17 TL | 3.0 | native |
| Nannoptopoma sternoptychum | Loricariidae | demersal | 5 TL | 2.1 | native |
| Nannostomus beckfordi | Lebiasinidae | benthopelagic | 8 TL | 3.3 | native |
| Nannostomus digrammus | Lebiasinidae | benthopelagic | 4 TL | 3.1 | native |
| Nannostomus eques | Lebiasinidae | benthopelagic | 5 TL | 3.3 | native |
| Nannostomus harrisoni | Lebiasinidae | benthopelagic | 6 TL | 3.3 | native |
| Nannostomus limatus | Lebiasinidae | benthopelagic | 5 TL | 3.4 | native |
| Nannostomus marginatus | Lebiasinidae | benthopelagic | 4 TL | 3.1 | native |
| Nannostomus trifasciatus | Lebiasinidae | benthopelagic | 5 TL | 3.3 | native |
| Nannostomus unifasciatus | Lebiasinidae | benthopelagic | 5 TL | 3.3 | native |
| Nemadoras elongatus | Doradidae | demersal | 16 TL | 3.0 | native |
| Nemadoras hemipeltis | Doradidae | demersal | 18 TL | 3.2 | native |
| Nemadoras humeralis | Doradidae | demersal | 16 TL | 3.2 | native |
| Nemadoras trimaculatus | Doradidae | demersal | 14 TL | 2.1 | native |
| Odontocharacidium aphanes | Crenuchidae | pelagic | 3 TL | 3.0 | native |
| Odontostilbe dierythrura | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Odontostilbe fugitiva | Characidae | benthopelagic | 5 TL | 3.0 | native |
| Oligancistrus punctatissimus | Loricariidae | demersal | 13 TL | 2.1 | native |
| Opsodoras boulengeri | Doradidae | demersal | 18 TL | 3.2 | native |
| Opsodoras morei | Doradidae | demersal | 13 TL | 2.1 | native |
| Opsodoras ternetzi | Doradidae | demersal | 15 TL | 3.2 | native |
| Orthosternarchus tamandua | Apteronotidae | benthopelagic | 44 TL | 3.0 | native |
| Ossubtus xinguense | Characidae | benthopelagic | 22 TL | 2.0 | native |
| Osteoglossum bicirrhosum | Osteoglossidae | benthopelagic | 120 TL | 3.2 | native |
| Osteoglossum ferreirai | Osteoglossidae | benthopelagic | 100 TL | 2.0 | native |
| Othonocheirodus eigenmanni | Characidae | benthopelagic | 12 TL | 3.0 | native |
| Otocinclus huaorani | Loricariidae | demersal | 4 TL | 2.7 | native |
| Otocinclus macrospilus | Loricariidae | demersal | 5 TL | 2.6 | native |
| Otocinclus vestitus | Loricariidae | demersal | 4 TL | 2.7 | native |
| Otocinclus vittatus | Loricariidae | demersal | 4 TL | 2.8 | native |
| Oxybrycon parvulus | Characidae | pelagic | 2 TL | 2.9 | native |
| Oxydoras eigenmanni | Doradidae | demersal | 12 TL | 3.0 | native |
| Oxydoras niger | Doradidae | demersal | 122 TL | 2.9 | native |
| Oxyropsis wrightiana | Loricariidae | demersal | 7 TL | 2.4 | native |
| Pamphorichthys minor | Poeciliidae | pelagic | 3 TL | 2.9 | native |
| Pamphorichthys scalpridens | Poeciliidae | pelagic | 4 TL | 2.9 | native |
| Panaque gnomus | Loricariidae | benthopelagic | 9 TL | 2.1 | native |
| Panaque nocturnus | Loricariidae | benthopelagic | 17 TL | native |
| Paracanthopoma parva | Trichomycteridae | demersal | 4 TL | 3.0 | native |
| Paragoniates alburnus | Characidae | demersal | 6 TL | 3.0 | endemic |
| Paratrygon aiereba | Potamotrygonidae | demersal | 99 TL | 3.3 | native |
| Pariolius armillatus | Heptapteridae | demersal | 17 TL | 3.2 | native |
| Parodon buckleyi | Parodontidae | benthopelagic | 19 TL | 2.9 | native |
| Parodon pongoensis | Parodontidae | benthopelagic | 13 TL | 3.0 | native |
| Peckoltia vittata | Loricariidae | demersal | 14 TL | 2.0 | native |
| Pellona altamazonica | Clupeidae | pelagic | 4 TL | 2.8 | native |
| Pellona castelnaeana | Clupeidae | pelagic | 89 TL | 4.5 | native |
| Pellona flavipinnis | Clupeidae | pelagic | 73 TL | 4.5 | native |
| Petitella georgiae | Characidae | pelagic | 5 TL | 3.0 | native |
| Phenacogaster beni | Characidae | benthopelagic | 5 TL | 3.1 | native |
| Phenacogaster pectinatus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Phractocephalus hemioliopterus | Pimelodidae | demersal | 134 TL | 4.2 | native |
| Physopyxis lyra | Doradidae | demersal | 5 TL | 3.0 | native |
| Piabarchus analis | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Piabucina elongata | Lebiasinidae | demersal | 18 TL | 2.9 | native |
| Piabucus dentatus | Characidae | benthopelagic | 16 TL | 3.2 | native |
| Piaractus brachypomus | Characidae | pelagic | 88 TL | 2.0 | native |
| Pimelodella cristata | Heptapteridae | demersal | 42 TL | 3.8 | native |
| Pimelodella gracilis | Heptapteridae | demersal | 21 TL | 3.3 | native |
| Pimelodella nigrofasciata | Heptapteridae | demersal | 18 TL | 3.0 | native |
| Pimelodella peruensis | Heptapteridae | demersal | 18 TL | 3.0 | native |
| Pimelodella steindachneri | Heptapteridae | demersal | 15 TL | 3.0 | native |
| Pimelodina flavipinnis | Pimelodidae | demersal | 56 TL | 3.2 | endemic |
| Pimelodus blochii | Pimelodidae | benthopelagic | 35 TL | 2.9 | native |
| Pimelodus ornatus | Pimelodidae | benthopelagic | 47 TL | 4.4 | native |
| Pimelodus pictus | Pimelodidae | benthopelagic | 11 TL | 3.0 | native |
| Platydoras costatus | Doradidae | demersal | 30 TL | 3.0 | native |
| Platynematichthys notatus | Pimelodidae | demersal | 98 TL | 3.7 | native |
| Platysilurus mucosus | Pimelodidae | demersal | 25 TL | 3.7 | native |
| Platystomatichthys sturio | Pimelodidae | demersal | 40 TL | 3.5 | native |
| Plectrochilus diabolicus | Trichomycteridae | benthopelagic | 6 TL | 3.2 | native |
| Plectrochilus machadoi | Trichomycteridae | benthopelagic | 6 TL | 4.5 | native |
| Plesiotrygon iwamae | Potamotrygonidae | demersal | 99 TL | 3.4 | native |
| Pnictes asphyxiatus | Achiridae | demersal | 17 TL | 3.4 | native |
| Poecilia branneri | Poeciliidae | benthopelagic | 4 TL | 3.0 | native |
| Poecilia parae | Poeciliidae | benthopelagic | 9 TL | 3.4 | native |
| Poecilocharax weitzmani | Crenuchidae | benthopelagic | 4 TL | 3.0 | native |
| Polycentrus schomburgkii | Nandidae | benthopelagic | 10 TL | 3.6 | native |
| Poptella brevispina | Characidae | benthopelagic | 10 TL | 3.2 | native |
| Potamobatrachus trispinosus | Batrachoididae | demersal | 7 TL | 3.2 | native |
| Potamorhina altamazonica | Curimatidae | benthopelagic | 33 TL | native |
| Potamorhina latior | Curimatidae | benthopelagic | 26 TL | 2.0 | native |
| Potamorhina pristigaster | Curimatidae | benthopelagic | 27 TL | native |
| Potamorrhaphis guianensis | Belonidae | pelagic | 30 TL | 3.6 | native |
| Potamotrygon castexi | Potamotrygonidae | benthopelagic | 99 TL | 3.6 | native |
| Potamotrygon constellata | Potamotrygonidae | benthopelagic | 99 TL | 3.6 | native |
| Potamotrygon motoro | Potamotrygonidae | benthopelagic | 99 TL | 3.6 | native |
| Potamotrygon orbignyi | Potamotrygonidae | benthopelagic | 99 TL | 3.2 | native |
| Potamotrygon scobina | Potamotrygonidae | benthopelagic | 99 TL | 3.6 | native |
| Priocharax pygmaeus | Characidae | benthopelagic | 2 TL | 2.9 | native |
| Prionobrama filigera | Characidae | pelagic | 6 TL | 3.0 | native |
| Pristella maxillaris | Characidae | pelagic | 5 TL | 3.1 | native |
| Pristigaster cayana | Clupeidae | pelagic | 18 TL | 3.4 | native |
| Pristis perotteti | Pristidae | benthopelagic | 650 TL | 4.0 | native |
| Pristobrycon aureus | Characidae | benthopelagic | 19 TL | 3.2 | native |
| Pristobrycon calmoni | Characidae | benthopelagic | 15 TL | 4.0 | native |
| Prochilodus britskii | Prochilodontidae | benthopelagic | 30 TL | 2.0 | native |
| Prochilodus nigricans | Prochilodontidae | benthopelagic | 37 TL | 2.0 | native |
| Prochilodus rubrotaeniatus | Prochilodontidae | benthopelagic | 40 TL | 2.0 | native |
| Prodontocharax alleni | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Prodontocharax melanotus | Characidae | benthopelagic | 6 TL | 3.0 | native |
| Psectrogaster amazonica | Curimatidae | benthopelagic | 21 TL | endemic |
| Psectrogaster ciliata | Curimatidae | benthopelagic | 16 TL | 2.5 | native |
| Psectrogaster essequibensis | Curimatidae | benthopelagic | 21 TL | native |
| Psectrogaster falcata | Curimatidae | benthopelagic | 21 TL | native |
| Psectrogaster rhomboides | Curimatidae | benthopelagic | 22 TL | 2.5 | native |
| Psectrogaster rutiloides | Curimatidae | benthopelagic | 18 TL | 2.0 | native |
| Pseudacanthicus spinosus | Loricariidae | demersal | 32 TL | 2.8 | native |
| Pseudanos gracilis | Anostomidae | benthopelagic | 18 TL | 2.9 | native |
| Pseudanos trimaculatus | Anostomidae | benthopelagic | 12 TL | 2.0 | native |
| Pseudepapterus cucuhyensis | Auchenipteridae | demersal | 8 TL | 3.2 | native |
| Pseudepapterus hasemani | Auchenipteridae | demersal | 13 TL | 3.4 | native |
| Pseudocetopsis minuta | Cetopsidae | demersal | 6 TL | 3.2 | native |
| Pseudocetopsis plumbea | Cetopsidae | demersal | 15 TL | 3.2 | native |
| Pseudohemiodon amazonus | Loricariidae | demersal | 12 TL | 2.8 | native |
| Pseudohemiodon laminus | Loricariidae | demersal | 20 TL | 2.8 | native |
| Pseudopimelodus pulcher | Pseudopimelodidae | demersal | 9 TL | 3.2 | native |
| Pseudoplatystoma corruscans | Pimelodidae | demersal | 166 TL | 4.5 | native |
| Pseudoplatystoma tigrinum | Pimelodidae | demersal | 130 TL | 4.5 | native |
| Pseudorinelepis genibarbis | Loricariidae | benthopelagic | 44 TL | 2.7 | native |
| Pseudotylosurus angusticeps | Belonidae | pelagic | 37 TL | 3.4 | native |
| Pseudotylosurus microps | Belonidae | pelagic | 49 TL | 3.4 | native |
| Pterobunocephalus depressus | Aspredinidae | demersal | 11 TL | 3.2 | native |
| Pterobunocephalus dolichurus | Aspredinidae | demersal | 9 TL | 3.0 | native |
| Pterodoras granulosus | Doradidae | demersal | 70 TL | 2.5 | native |
| Pterophyllum leopoldi | Cichlidae | benthopelagic | 7 TL | 3.1 | native |
| Pterophyllum scalare | Cichlidae | benthopelagic | 10 TL | 3.6 | native |
| Ptychocharax rhyacophila | Characidae | pelagic | 8 TL | 3.3 | native |
| Pygocentrus nattereri | Characidae | pelagic | 41 TL | 4.0 | native |
| Pygopristis denticulata | Characidae | benthopelagic | 20 TL | 3.1 | native |
| Pyrrhulina australis | Lebiasinidae | benthopelagic | 7 TL | 3.2 | native |
| Pyrrhulina beni | Lebiasinidae | benthopelagic | 7 TL | 3.2 | native |
| Pyrrhulina brevis | Lebiasinidae | benthopelagic | 9 TL | 3.1 | native |
| Pyrrhulina eleanorae | Lebiasinidae | benthopelagic | 10 TL | 3.1 | native |
| Pyrrhulina filamentosa | Lebiasinidae | benthopelagic | 11 TL | 3.2 | native |
| Pyrrhulina laeta | Lebiasinidae | benthopelagic | 10 TL | 3.3 | native |
| Pyrrhulina maxima | Lebiasinidae | benthopelagic | 10 TL | 3.2 | native |
| Pyrrhulina obermuelleri | Lebiasinidae | benthopelagic | 8 TL | 3.1 | native |
| Pyrrhulina semifasciata | Lebiasinidae | benthopelagic | 9 TL | 3.1 | native |
| Pyrrhulina spilota | Lebiasinidae | benthopelagic | 9 TL | 3.1 | native |
| Pyrrhulina vittata | Lebiasinidae | benthopelagic | 5 TL | 3.6 | native |
| Racenisia fimbriipinna | Hypopomidae | benthopelagic | 12 TL | 2.8 | native |
| Retroculus lapidifer | Cichlidae | benthopelagic | 25 TL | 3.0 | native |
| Rhabdolichops caviceps | Sternopygidae | benthopelagic | 31 TL | 3.0 | native |
| Rhabdolichops eastwardi | Sternopygidae | benthopelagic | 28 TL | 3.0 | native |
| Rhabdolichops troscheli | Sternopygidae | benthopelagic | 49 TL | 3.0 | native |
| Rhadinoloricaria macromystax | Loricariidae | demersal | 18 TL | 2.1 | native |
| Rhamdia bathyura | Heptapteridae | benthopelagic | 26 TL | 3.0 | native |
| Rhamdia dorsalis | Heptapteridae | benthopelagic | 26 TL | 3.0 | native |
| Rhamdia ortoni | Heptapteridae | benthopelagic | 26 TL | 3.0 | native |
| Rhamphichthys drepanium | Rhamphichthyidae | benthopelagic | 55 TL | 3.0 | native |
| Rhaphiodon vulpinus | Cynodontidae | pelagic | 69 TL | 2.9 | native |
| Rhinodoras boehlkei | Doradidae | demersal | 17 TL | 3.2 | native |
| Rhinosardinia amazonica | Clupeidae | pelagic | 9 TL | 3.4 | native |
| Rhytiodus argenteofuscus | Anostomidae | benthopelagic | 25 TL | 2.5 | endemic |
| Rhytiodus microlepis | Anostomidae | benthopelagic | 25 TL | 2.5 | native |
| Rineloricaria konopickyi | Loricariidae | demersal | 12 TL | 2.8 | native |
| Rineloricaria teffeana | Loricariidae | demersal | 18 TL | 2.5 | native |
| Roeboides affinis | Characidae | benthopelagic | 14 TL | 3.7 | native |
| Roeboides biserialis | Characidae | benthopelagic | 6 TL | 3.2 | native |
| Roeboides microlepis | Characidae | benthopelagic | 21 TL | 3.5 | native |
| Roeboides myersii | Characidae | benthopelagic | 22 TL | 4.5 | native |
| Roeboides oligistos | Characidae | benthopelagic | 9 TL | 3.6 | native |
| Roestes ogilviei | Cynodontidae | benthopelagic | 23 TL | 3.0 | native |
| Salminus affinis | Characidae | benthopelagic | 13 TL | 3.0 | misidentification |
| Salminus hilarii | Characidae | benthopelagic | 61 TL | 2.9 | native |
| Satanoperca acuticeps | Cichlidae | benthopelagic | 21 TL | 3.5 | endemic |
| Satanoperca daemon | Cichlidae | benthopelagic | 21 TL | 3.5 | native |
| Satanoperca jurupari | Cichlidae | benthopelagic | 23 TL | 3.0 | native |
| Satanoperca lilith | Cichlidae | benthopelagic | 32 TL | 3.6 | native |
| Schizodon fasciatus | Anostomidae | benthopelagic | 40 TL | 2.0 | native |
| Schizodon vittatus | Anostomidae | benthopelagic | 38 TL | 2.7 | endemic |
| Schultzichthys bondi | Trichomycteridae | benthopelagic | 5 TL | 3.0 | native |
| Scoloplax dicra | Scoloplacidae | demersal | 2 TL | 2.8 | native |
| Scoloplax empousa | Scoloplacidae | demersal | 3 TL | 2.8 | native |
| Scopaeocharax atopodus | Characidae | pelagic | 3 TL | 3.0 | native |
| Scopaeocharax rhinodus | Characidae | pelagic | 3 TL | 3.0 | native |
| Semaprochilodus taeniurus | Prochilodontidae | benthopelagic | 30 TL | 2.0 | native |
| Serrapinnus heterodon | Characidae | pelagic | 5 TL | 3.2 | native |
| Serrapinnus micropterus | Characidae | benthopelagic | 4 TL | 3.0 | native |
| Serrasalmus altispinis | Characidae | pelagic | 24 TL | 3.5 | native |
| Serrasalmus eigenmanni | Characidae | benthopelagic | 22 TL | 4.1 | native |
| Serrasalmus elongatus | Characidae | benthopelagic | 30 TL | 3.9 | native |
| Serrasalmus hollandi | Characidae | benthopelagic | 23 TL | 4.1 | native |
| Serrasalmus humeralis | Characidae | benthopelagic | 25 TL | 4.0 | native |
| Serrasalmus maculatus | Characidae | pelagic | 25 TL | 3.6 | native |
| Serrasalmus manueli | Characidae | benthopelagic | 44 TL | 3.1 | native |
| Serrasalmus rhombeus | Characidae | benthopelagic | 51 TL | 4.2 | native |
| Serrasalmus sanchezi | Characidae | benthopelagic | 14 TL | 2.9 | native |
| Serrasalmus serrulatus | Characidae | benthopelagic | 24 TL | 3.5 | native |
| Serrasalmus spilopleura | Characidae | benthopelagic | 26 TL | 4.1 | native |
| Soleonasus finis | Achiridae | demersal | 17 TL | 3.4 | native |
| Sorubim lima | Pimelodidae | demersal | 53 TL | 4.0 | native |
| Sorubim maniradii | Pimelodidae | demersal | 0 TL | native |
| Sorubimichthys planiceps | Pimelodidae | demersal | 183 TL | 4.5 | native |
| Steatogenys duidae | Hypopomidae | benthopelagic | 19 TL | 2.6 | native |
| Steatogenys elegans | Hypopomidae | benthopelagic | 30 TL | 3.0 | native |
| Stegophilus panzeri | Trichomycteridae | demersal | 5 TL | 3.0 | native |
| Stegostenopos cryptogenes | Hypopomidae | benthopelagic | 10 TL | 2.6 | native |
| Steindachnerina bimaculata | Curimatidae | benthopelagic | 17 TL | 2.5 | native |
| Steindachnerina binotata | Curimatidae | benthopelagic | 17 TL | 2.5 | native |
| Steindachnerina dobula | Curimatidae | benthopelagic | 20 TL | native |
| Steindachnerina guentheri | Curimatidae | benthopelagic | 14 TL | 2.6 | native |
| Steindachnerina hypostoma | Curimatidae | benthopelagic | 12 TL | 2.8 | native |
| Steindachnerina leucisca | Curimatidae | benthopelagic | 19 TL | native |
| Sternarchorhamphus muelleri | Apteronotidae | benthopelagic | 46 TL | 3.0 | native |
| Sternopygus astrabes | Sternopygidae | benthopelagic | 20 TL | 2.6 | native |
| Sternopygus macrurus | Sternopygidae | benthopelagic | 141 TL | 3.2 | native |
| Stethaprion erythrops | Characidae | benthopelagic | 11 TL | 3.0 | native |
| Stichonodon insignis | Characidae | benthopelagic | 8 TL | 2.9 | native |
| Sturisoma guentheri | Loricariidae | demersal | 23 TL | native |
| Symphysodon aequifasciatus | Cichlidae | benthopelagic | 17 TL | 3.3 | native |
| Symphysodon discus | Cichlidae | benthopelagic | 16 TL | 2.9 | native |
| Synbranchus madeirae | Synbranchidae | demersal | 150 TL | 3.2 | native |
| Synbranchus marmoratus | Synbranchidae | demersal | 150 TL | 3.2 | native |
| Taeniacara candidi | Cichlidae | benthopelagic | 5 TL | 3.5 | native |
| Tahuantinsuyoa chipi | Cichlidae | demersal | 10 TL | 3.2 | native |
| Tahuantinsuyoa macantzatza | Cichlidae | demersal | 12 TL | 3.0 | native |
| Tatia intermedia | Auchenipteridae | benthopelagic | 15 TL | 3.2 | native |
| Tatia strigata | Auchenipteridae | benthopelagic | 8 TL | 3.2 | native |
| Teleocichla centrarchus | Cichlidae | benthopelagic | 8 TL | 3.0 | native |
| Teleocichla gephyrogramma | Cichlidae | benthopelagic | 6 TL | 3.3 | native |
| Teleocichla prionogenys | Cichlidae | benthopelagic | 7 TL | 3.2 | native |
| Teleocichla proselytus | Cichlidae | benthopelagic | 7 TL | 3.2 | native |
| Tetragonopterus argenteus | Characidae | demersal | 12 TL | 3.3 | native |
| Tetragonopterus chalceus | Characidae | demersal | 12 TL | 3.3 | endemic |
| Thalassophryne amazonica | Batrachoididae | demersal | 19 TL | 3.6 | native |
| Thayeria boehlkei | Characidae | pelagic | 4 TL | 3.3 | native |
| Thayeria ifati | Characidae | pelagic | 5 TL | 3.0 | native |
| Thayeria obliqua | Characidae | pelagic | 10 TL | 3.2 | native |
| Thoracocharax securis | Gasteropelecidae | pelagic | 9 TL | 3.0 | native |
| Thoracocharax stellatus | Gasteropelecidae | pelagic | 8 TL | 3.1 | native |
| Trachelyopterichthys taeniatus | Auchenipteridae | demersal | 15 TL | 3.3 | misidentification |
| Trachelyopterus galeatus | Auchenipteridae | demersal | 27 TL | 3.3 | native |
| Trachydoras microstomus | Doradidae | demersal | 8 TL | 3.0 | native |
| Trachydoras nattereri | Doradidae | demersal | 13 TL | 2.7 | native |
| Trachydoras steindachneri | Doradidae | demersal | 11 TL | 2.7 | native |
| Trichomycterus hasemani | Trichomycteridae | benthopelagic | 17 TL | 3.2 | native |
| Triportheus albus | Characidae | benthopelagic | 19 TL | 3.1 | native |
| Triportheus angulatus | Characidae | benthopelagic | 20 TL | 3.1 | native |
| Triportheus culter | Characidae | benthopelagic | 30 TL | 4.1 | native |
| Triportheus curtus | Characidae | benthopelagic | 14 TL | 3.2 | native |
| Triportheus elongatus | Characidae | benthopelagic | 30 TL | 4.1 | native |
| Triportheus pictus | Characidae | benthopelagic | 14 TL | 3.0 | native |
| Triportheus rotundatus | Characidae | benthopelagic | 22 TL | 2.4 | native |
| Tyttobrycon hamatus | Characidae | pelagic | 3 TL | 3.0 | native |
| Tyttocharax cochui | Characidae | pelagic | 3 TL | 3.0 | native |
| Tyttocharax madeirae | Characidae | pelagic | 3 TL | 2.9 | native |
| Uaru amphiacanthoides | Cichlidae | benthopelagic | 31 TL | 2.8 | native |
| Vandellia cirrhosa | Trichomycteridae | demersal | 3 TL | 4.5 | native |
| Vandellia sanguinea | Trichomycteridae | demersal | 3 TL | 4.5 | native |
| Xenurobrycon heterodon | Characidae | benthopelagic | 3 TL | 2.9 | native |
| Xenurobrycon pteropus | Characidae | benthopelagic | 2 TL | 3.0 | native |
| Xyliphius melanopterus | Aspredinidae | demersal | 18 TL | 3.2 | native |
| Zungaro zungaro | Pimelodidae | demersal | 171 TL | 4.5 | native |
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| Page generated June 30, 2003 from Fishbase.org. Page created by: Jen, 15.11.01, last modified by Jen, 20.09.02. |