| Order | Family | Species | Status | FB name | Name |
| Siluriformes | Doradidae | Acanthodoras cataphractus | native | Spiny catfish | |
| Characiformes | Acestrorhynchidae | Acestrorhynchus falcatus | native | ||
| Characiformes | Acestrorhynchidae | Acestrorhynchus microlepis | native | Pike characin | |
| Pleuronectiformes | Achiridae | Achirus achirus | native | Drab sole | |
| Characiformes | Characidae | Acnodon oligacanthus | native | ||
| Perciformes | Cichlidae | Aequidens paloemeuensis | native | ||
| Perciformes | Cichlidae | Aequidens tetramerus | native | Saddle cichlid | Kokko |
| Siluriformes | Auchenipteridae | Ageneiosus inermis | native | Manduba | Prapali |
| Siluriformes | Auchenipteridae | Ageneiosus marmoratus | native | Bottlenose catfish | |
| Siluriformes | Auchenipteridae | Ageneiosus ucayalensis | native | ||
| Cyprinodontiformes | Anablepidae | Anableps anableps | native | Largescale foureyes | |
| Cyprinodontiformes | Anablepidae | Anableps microlepis | native | Foureyes | |
| Clupeiformes | Engraulidae | Anchoa spinifer | native | Spicule anchovy | Krafana |
| Clupeiformes | Engraulidae | Anchovia surinamensis | native | Surinam anchovy | |
| Clupeiformes | Engraulidae | Anchoviella guianensis | native | Guyana anchovy | |
| Clupeiformes | Engraulidae | Anchoviella lepidentostole | native | Broadband anchovy | |
| Clupeiformes | Engraulidae | Anchoviella manamensis | native | Manamo anchovy | |
| Siluriformes | Loricariidae | Ancistrus gymnorhynchus | misidentification | ||
| Siluriformes | Loricariidae | Ancistrus hoplogenys | native | ||
| Siluriformes | Loricariidae | Ancistrus leucostictus | questionable | ||
| Siluriformes | Loricariidae | Ancistrus temminckii | endemic | ||
| Characiformes | Anostomidae | Anostomus anostomus | native | Striped headstander | |
| Characiformes | Anostomidae | Anostomus plicatus | native | ||
| Characiformes | Anostomidae | Anostomus spiloclistron | native | ||
| Characiformes | Anostomidae | Anostomus ternetzi | native | ||
| Characiformes | Parodontidae | Apareiodon gransabana | native | ||
| Characiformes | Characidae | Aphyocharacidium melandetum | native | ||
| Pleuronectiformes | Achiridae | Apionichthys dumerili | native | Longtail sole | |
| Perciformes | Cichlidae | Apistogramma ortmanni | native | ||
| Perciformes | Cichlidae | Apistogramma steindachneri | native | ||
| Gymnotiformes | Apteronotidae | Apteronotus albifrons | native | Black ghost | |
| Gymnotiformes | Apteronotidae | Apteronotus leptorhynchus | native | ||
| Characiformes | Hemiodontidae | Argonectes longiceps | native | ||
| Siluriformes | Ariidae | Aspistor quadriscutis | native | Bressou sea catfish | |
| Siluriformes | Aspredinidae | Aspredinichthys filamentosus | native | Sevenbarbed banjo | |
| Siluriformes | Aspredinidae | Aspredinichthys tibicen | native | Tenbarbed banjo | |
| Siluriformes | Aspredinidae | Aspredo aspredo | native | Banjo | |
| Characiformes | Characidae | Astyanax bimaculatus | native | Twospot astyanax | |
| Siluriformes | Auchenipteridae | Auchenipterus dentatus | native | ||
| Perciformes | Gobiidae | Awaous flavus | native | ||
| Siluriformes | Pseudopimelodidae | Batrochoglanis raninus | native | ||
| Siluriformes | Pseudopimelodidae | Batrochoglanis villosus | native | ||
| Characiformes | Hemiodontidae | Bivibranchia bimaculata | native | ||
| Characiformes | Hemiodontidae | Bivibranchia simulata | native | ||
| Characiformes | Characidae | Brachychalcinus orbicularis | native | Discus tetra | |
| Gymnotiformes | Hypopomidae | Brachyhypopomus beebei | native | ||
| Gymnotiformes | Hypopomidae | Brachyhypopomus brevirostris | native | Bluntnose knifefish | |
| Gymnotiformes | Hypopomidae | Brachyhypopomus pinnicaudatus | native | ||
| Siluriformes | Pimelodidae | Brachyplatystoma filamentosum | native | Kumakuma | |
| Siluriformes | Pimelodidae | Brachyplatystoma vaillantii | native | Laulao catfish | Lalau |
| Siluriformes | Heptapteridae | Brachyrhamdia heteropleura | native | ||
| Characiformes | Characidae | Brycon falcatus | native | ||
| Characiformes | Characidae | Brycon pesu | native | Mourning tetra | |
| Characiformes | Characidae | Bryconops affinis | native | Orangefin tetra | |
| Characiformes | Characidae | Bryconops caudomaculatus | native | Tailspot tetra | |
| Characiformes | Characidae | Bryconops melanurus | native | ||
| Siluriformes | Aspredinidae | Bunocephalus amaurus | native | Camouflaged catfish | |
| Siluriformes | Aspredinidae | Bunocephalus verrucosus | native | Bark catfish | |
| Characiformes | Chilodontidae | Caenotropus labyrinthicus | native | ||
| Characiformes | Chilodontidae | Caenotropus maculosus | native | ||
| Siluriformes | Callichthyidae | Callichthys callichthys | native | Cascarudo | Pantservis |
| Carcharhiniformes | Carcharhinidae | Carcharhinus leucas | native | Bull shark | |
| Characiformes | Gasteropelecidae | Carnegiella strigata | native | Marbled hatchetfish | |
| Siluriformes | Ariidae | Cathorops arenatus | native | ||
| Siluriformes | Auchenipteridae | Centromochlus concolor | native | ||
| Siluriformes | Auchenipteridae | Centromochlus punctatus | native | ||
| Perciformes | Centropomidae | Centropomus ensiferus | native | Swordspine snook | Kartasnoek |
| Perciformes | Centropomidae | Centropomus parallelus | native | Fat snook | Snoek |
| Siluriformes | Pseudopimelodidae | Cephalosilurus nigricaudus | endemic | ||
| Siluriformes | Cetopsidae | Cetopsidium minutum | native | ||
| Siluriformes | Cetopsidae | Cetopsidium orientale | native | ||
| Perciformes | Cichlidae | Chaetobranchus flavescens | native | Kamara paru | |
| Characiformes | Characidae | Chalceus macrolepidotus | native | Pinktail chalceus | |
| Characiformes | Crenuchidae | Characidium pellucidum | native | ||
| Characiformes | Crenuchidae | Characidium zebra | native | ||
| Characiformes | Characidae | Charax gibbosus | native | Glass headstander | |
| Characiformes | Characidae | Charax pauciradiatus | native | ||
| Siluriformes | Heptapteridae | Chasmocranus brevior | native | ||
| Siluriformes | Heptapteridae | Chasmocranus longior | native | ||
| Siluriformes | Heptapteridae | Chasmocranus surinamensis | endemic | ||
| Characiformes | Chilodontidae | Chilodus punctatus | native | Spotted headstander | |
| Perciformes | Cichlidae | Cichla ocellaris | native | Peacock cichlid | |
| Perciformes | Cichlidae | Cichlasoma bimaculatum | native | Black acara | Krobia |
| Perciformes | Cichlidae | Cleithracara maronii | native | Keyhole cichlid | |
| Tetraodontiformes | Tetraodontidae | Colomesus psittacus | native | Banded puffer | |
| Characiformes | Lebiasinidae | Copella arnoldi | native | Splash tetra | |
| Characiformes | Lebiasinidae | Copella carsevennensis | native | ||
| Siluriformes | Callichthyidae | Corydoras aeneus | native | Bronze corydoras | |
| Siluriformes | Callichthyidae | Corydoras baderi | native | ||
| Siluriformes | Callichthyidae | Corydoras bicolor | native | ||
| Siluriformes | Callichthyidae | Corydoras boesemani | native | ||
| Siluriformes | Callichthyidae | Corydoras bondi | native | Blackstripe corydoras | |
| Siluriformes | Callichthyidae | Corydoras breei | native | ||
| Siluriformes | Callichthyidae | Corydoras brevirostris | native | ||
| Siluriformes | Callichthyidae | Corydoras coppenamensis | native | ||
| Siluriformes | Callichthyidae | Corydoras filamentosus | native | ||
| Siluriformes | Callichthyidae | Corydoras geoffroy | native | ||
| Siluriformes | Callichthyidae | Corydoras guianensis | native | ||
| Siluriformes | Callichthyidae | Corydoras heteromorphus | native | ||
| Siluriformes | Callichthyidae | Corydoras melanistius | native | Bluespotted corydoras | |
| Siluriformes | Callichthyidae | Corydoras nanus | native | ||
| Siluriformes | Callichthyidae | Corydoras osteocarus | native | ||
| Siluriformes | Callichthyidae | Corydoras oxyrhynchus | native | ||
| Siluriformes | Callichthyidae | Corydoras punctatus | native | Spotfin corydoras | |
| Siluriformes | Callichthyidae | Corydoras sanchesi | native | ||
| Siluriformes | Callichthyidae | Corydoras saramaccensis | native | ||
| Siluriformes | Callichthyidae | Corydoras sipaliwini | native | ||
| Siluriformes | Callichthyidae | Corydoras spilurus | native | Pinkthroat corydoras | |
| Siluriformes | Callichthyidae | Corydoras surinamensis | native | ||
| Siluriformes | Callichthyidae | Corydoras trilineatus | native | Threestripe corydoras | |
| Perciformes | Cichlidae | Crenicichla albopunctata | native | ||
| Perciformes | Cichlidae | Crenicichla coppenamensis | endemic | ||
| Perciformes | Cichlidae | Crenicichla lugubris | native | ||
| Perciformes | Cichlidae | Crenicichla multispinosa | native | ||
| Perciformes | Cichlidae | Crenicichla nickeriensis | endemic | ||
| Perciformes | Cichlidae | Crenicichla saxatilis | native | Ringtail pike cichlid | Booto |
| Perciformes | Cichlidae | Crenicichla sipaliwini | endemic | ||
| Characiformes | Crenuchidae | Crenuchus spilurus | native | Sailfin tetra | |
| Siluriformes | Loricariidae | Cteniloricaria maculata | native | ||
| Siluriformes | Loricariidae | Cteniloricaria platystoma | native | ||
| Characiformes | Characidae | Ctenobrycon spilurus | native | Silver tetra | |
| Characiformes | Curimatidae | Curimata cyprinoides | native | ||
| Characiformes | Curimatidae | Curimatopsis crypticus | native | ||
| Characiformes | Cynodontidae | Cynodon meionactis | native | ||
| Characiformes | Characidae | Cynopotamus essequibensis | native | ||
| Perciformes | Sciaenidae | Cynoscion acoupa | native | Acoupa weakfish | Schelvis |
| Perciformes | Sciaenidae | Cynoscion steindachneri | native | Smalltooth weakfish | Weti-weti |
| Characiformes | Curimatidae | Cyphocharax helleri | native | ||
| Characiformes | Curimatidae | Cyphocharax microcephalus | native | ||
| Characiformes | Curimatidae | Cyphocharax punctatus | native | ||
| Characiformes | Curimatidae | Cyphocharax spilurus | native | Maka Fisi | |
| Cypriniformes | Cyprinidae | Cyprinus carpio carpio | introduced | Common carp | |
| Siluriformes | Doradidae | Doras carinatus | native | ||
| Siluriformes | Doradidae | Doras micropoeus | native | ||
| Perciformes | Eleotridae | Dormitator lophocephalus | native | ||
| Perciformes | Eleotridae | Dormitator maculatus | native | Fat sleeper | |
| Gymnotiformes | Sternopygidae | Eigenmannia virescens | native | Glass knifefish | Logo logo |
| Gymnotiformes | Gymnotidae | Electrophorus electricus | native | Electric eel | |
| Perciformes | Eleotridae | Eleotris amblyopsis | native | Large-scaled spinycheek sleeper | |
| Perciformes | Eleotridae | Eleotris pisonis | native | Spinycheek sleeper | |
| Characiformes | Erythrinidae | Erythrinus erythrinus | native | Matoeli | |
| Perciformes | Gerreidae | Eugerres plumieri | native | Striped mojarra | |
| Perciformes | Gobiidae | Evorthodus lyricus | native | Lyre goby | |
| Siluriformes | Loricariidae | Farlowella reticulata | native | ||
| Siluriformes | Loricariidae | Farlowella rugosa | native | ||
| Characiformes | Gasteropelecidae | Gasteropelecus sternicla | native | River hatchetfish | |
| Perciformes | Cichlidae | Geophagus brachybranchus | native | ||
| Perciformes | Cichlidae | Geophagus brokopondo | native | ||
| Perciformes | Cichlidae | Geophagus harreri | native | Maroni eartheater | |
| Perciformes | Cichlidae | Geophagus surinamensis | native | Redstriped eartheater | |
| Perciformes | Gerreidae | Gerres cinereus | native | Yellow fin mojarra | |
| Siluriformes | Auchenipteridae | Glanidium leopardum | native | ||
| Perciformes | Gobiidae | Gobioides grahamae | native | ||
| Perciformes | Eleotridae | Gobiomorus dormitor | native | Bigmouth sleeper | |
| Perciformes | Gobiidae | Gobionellus thoropsis | native | Sperm goby | Sperm goby |
| Perciformes | Cichlidae | Guianacara oelemariensis | endemic | ||
| Perciformes | Cichlidae | Guianacara owroewefi | native | Crobia | |
| Perciformes | Cichlidae | Guianacara sphenozona | native | Ouru muje | |
| Gymnotiformes | Rhamphichthyidae | Gymnorhamphichthys rondoni | native | ||
| Gymnotiformes | Gymnotidae | Gymnotus anguillaris | native | ||
| Gymnotiformes | Gymnotidae | Gymnotus carapo | native | Banded knifefish | |
| Gymnotiformes | Gymnotidae | Gymnotus cataniapo | native | ||
| Gymnotiformes | Gymnotidae | Gymnotus coropinae | native | ||
| Siluriformes | Loricariidae | Harttia surinamensis | native | ||
| Siluriformes | Loricariidae | Harttiella crassicauda | native | ||
| Siluriformes | Cetopsidae | Helogenes marmoratus | native | ||
| Siluriformes | Loricariidae | Hemiancistrus macrops | native | ||
| Siluriformes | Loricariidae | Hemiancistrus medians | native | ||
| Siluriformes | Loricariidae | Hemiancistrus megacephalus | native | ||
| Characiformes | Characidae | Hemibrycon surinamensis | native | ||
| Characiformes | Characidae | Hemigrammus bellottii | misidentification | ||
| Characiformes | Characidae | Hemigrammus boesemani | native | ||
| Characiformes | Characidae | Hemigrammus guyanensis | native | ||
| Characiformes | Characidae | Hemigrammus lunatus | native | ||
| Characiformes | Characidae | Hemigrammus ocellifer | native | Head-and-taillight tetra | |
| Characiformes | Characidae | Hemigrammus rodwayi | native | ||
| Characiformes | Characidae | Hemigrammus unilineatus | native | Featherfin tetra | |
| Characiformes | Hemiodontidae | Hemiodus argenteus | native | ||
| Characiformes | Hemiodontidae | Hemiodus huraulti | native | ||
| Characiformes | Hemiodontidae | Hemiodus quadrimaculatus | native | Barred hemiodus | |
| Characiformes | Hemiodontidae | Hemiodus unimaculatus | native | ||
| Siluriformes | Pimelodidae | Hemisorubim platyrhynchos | native | Porthole shovelnose catfish | |
| Siluriformes | Heptapteridae | Heptapterus bleekeri | native | ||
| Siluriformes | Heptapteridae | Heptapterus mustelinus | native | ||
| Siluriformes | Heptapteridae | Heptapterus tapanahoniensis | native | ||
| Perciformes | Cichlidae | Heros severus | misidentification | Banded cichlid | |
| Characiformes | Erythrinidae | Hoplerythrinus unitaeniatus | native | Aimara | Stong walapa |
| Characiformes | Erythrinidae | Hoplias aimara | native | Haimara | |
| Characiformes | Erythrinidae | Hoplias macrophthalmus | native | Giant trahira | Anjoemara |
| Characiformes | Erythrinidae | Hoplias malabaricus | native | Trahira | Pataka |
| Siluriformes | Callichthyidae | Hoplosternum littorale | native | Hassar | Pantservis |
| Characiformes | Characidae | Hyphessobrycon copelandi | native | ||
| Characiformes | Characidae | Hyphessobrycon georgettae | native | ||
| Characiformes | Characidae | Hyphessobrycon rosaceus | native | Rosy tetra | |
| Siluriformes | Pimelodidae | Hypophthalmus edentatus | native | Highwaterman catfish | Kwassi mama |
| Siluriformes | Pimelodidae | Hypophthalmus marginatus | native | ||
| Gymnotiformes | Hypopomidae | Hypopomus artedi | native | ||
| Siluriformes | Loricariidae | Hypoptopoma guianense | native | ||
| Gymnotiformes | Hypopomidae | Hypopygus lepturus | native | ||
| Siluriformes | Loricariidae | Hypostomus coppenamensis | native | ||
| Siluriformes | Loricariidae | Hypostomus corantijni | native | ||
| Siluriformes | Loricariidae | Hypostomus crassicauda | native | ||
| Siluriformes | Loricariidae | Hypostomus gymnorhynchus | native | ||
| Siluriformes | Loricariidae | Hypostomus macrophthalmus | native | ||
| Siluriformes | Loricariidae | Hypostomus micromaculatus | native | ||
| Siluriformes | Loricariidae | Hypostomus nickeriensis | native | ||
| Siluriformes | Loricariidae | Hypostomus occidentalis | native | ||
| Siluriformes | Loricariidae | Hypostomus paucimaculatus | native | ||
| Siluriformes | Loricariidae | Hypostomus plecostomus | native | Suckermouth catfish | |
| Siluriformes | Loricariidae | Hypostomus pseudohemiurus | native | ||
| Siluriformes | Loricariidae | Hypostomus saramaccensis | native | ||
| Siluriformes | Loricariidae | Hypostomus sipaliwinii | native | ||
| Siluriformes | Loricariidae | Hypostomus surinamensis | native | ||
| Siluriformes | Loricariidae | Hypostomus tapanahoniensis | native | ||
| Siluriformes | Loricariidae | Hypostomus ventromaculatus | native | Wara wara | |
| Siluriformes | Loricariidae | Hypostomus watwata | native | Armored catfish | Zeekwiekwie |
| Siluriformes | Heptapteridae | Imparfinis minutus | questionable | ||
| Siluriformes | Heptapteridae | Imparfinis pijpersi | endemic | ||
| Siluriformes | Trichomycteridae | Ituglanis amazonicus | native | ||
| Characiformes | Characidae | Jupiaba abramoides | native | ||
| Characiformes | Characidae | Jupiaba meunieri | native | ||
| Characiformes | Characidae | Jupiaba pinnata | native | ||
| Characiformes | Characidae | Jupiaba polylepis | native | ||
| Perciformes | Cichlidae | Krobia guianensis | native | Krobia | Ooroe wefi |
| Perciformes | Cichlidae | Krobia itanyi | native | Dolphin cichlid | |
| Cyprinodontiformes | Rivulidae | Kryptolebias sepia | native | ||
| Characiformes | Anostomidae | Leporinus arcus | native | Lipstick leporinus | |
| Characiformes | Anostomidae | Leporinus desmotes | native | ||
| Characiformes | Anostomidae | Leporinus fasciatus | native | Banded leporinus | |
| Characiformes | Anostomidae | Leporinus friderici | native | Threespot leporinus | Warakoe |
| Characiformes | Anostomidae | Leporinus gossei | native | ||
| Characiformes | Anostomidae | Leporinus lebaili | native | ||
| Characiformes | Anostomidae | Leporinus maculatus | native | Spotted leporinus | |
| Characiformes | Anostomidae | Leporinus megalepis | native | ||
| Characiformes | Anostomidae | Leporinus nijsseni | native | ||
| Characiformes | Anostomidae | Leporinus pellegrinii | native | ||
| Siluriformes | Loricariidae | Lithoxus lithoides | native | ||
| Siluriformes | Loricariidae | Lithoxus pallidimaculatus | endemic | ||
| Siluriformes | Loricariidae | Lithoxus surinamensis | endemic | ||
| Siluriformes | Loricariidae | Loricaria cataphracta | native | ||
| Siluriformes | Loricariidae | Loricaria nickeriensis | native | ||
| Siluriformes | Loricariidae | Loricariichthys maculatus | native | ||
| Clupeiformes | Engraulidae | Lycengraulis batesii | native | Bates' sabretooth anchovy | Krafana |
| Clupeiformes | Engraulidae | Lycengraulis grossidens | native | Atlantic sabretooth anchovy | Krafana |
| Siluriformes | Callichthyidae | Megalechis picta | native | Spotted hoplo | Katrina kwikwi |
| Siluriformes | Callichthyidae | Megalechis thoracata | native | ||
| Elopiformes | Megalopidae | Megalops atlanticus | native | Tarpon | Trapoen |
| Characiformes | Crenuchidae | Melanocharacidium blennioides | native | ||
| Characiformes | Crenuchidae | Melanocharacidium dispilomma | native | ||
| Siluriformes | Loricariidae | Metaloricaria nijsseni | native | ||
| Siluriformes | Loricariidae | Metaloricaria paucidens | native | ||
| Characiformes | Characidae | Metynnis altidorsalis | native | ||
| Characiformes | Crenuchidae | Microcharacidium eleotrioides | native | ||
| Siluriformes | Pseudopimelodidae | Microglanis poecilus | native | Dwarf marbled catfish | |
| Siluriformes | Pseudopimelodidae | Microglanis secundus | native | ||
| Syngnathiformes | Syngnathidae | Microphis brachyurus lineatus | native | ||
| Cyprinodontiformes | Poeciliidae | Micropoecilia parae | native | ||
| Characiformes | Characidae | Moenkhausia browni | native | ||
| Characiformes | Characidae | Moenkhausia chrysargyrea | native | ||
| Characiformes | Characidae | Moenkhausia collettii | native | ||
| Characiformes | Characidae | Moenkhausia georgiae | native | ||
| Characiformes | Characidae | Moenkhausia grandisquamis | native | ||
| Characiformes | Characidae | Moenkhausia hemigrammoides | native | ||
| Characiformes | Characidae | Moenkhausia lepidura | native | ||
| Characiformes | Characidae | Moenkhausia oligolepis | native | Glass tetra | |
| Characiformes | Characidae | Moenkhausia rara | native | ||
| Characiformes | Characidae | Moenkhausia surinamensis | native | ||
| Perciformes | Polycentridae | Monocirrhus polyacanthus | error | Amazon leaffish | |
| Mugiliformes | Mugilidae | Mugil cephalus | questionable | Flathead mullet | Harder |
| Mugiliformes | Mugilidae | Mugil liza | native | Liza | |
| Characiformes | Characidae | Myletes schomburgkii | native | ||
| Characiformes | Characidae | Myleus rhomboidalis | native | ||
| Characiformes | Characidae | Myleus schomburgkii | questionable | Disk tetra | |
| Characiformes | Characidae | Myleus setiger | native | ||
| Characiformes | Characidae | Myleus ternetzi | native | ||
| Characiformes | Characidae | Myloplus planquettei | native | ||
| Characiformes | Characidae | Myloplus rubripinnis | native | Redhook myleus | |
| Anguilliformes | Ophichthidae | Myrophis plumbeus | native | Leaden worm eel | |
| Perciformes | Cichlidae | Nannacara anomala | native | Goldeneye cichlid | |
| Characiformes | Lebiasinidae | Nannostomus beckfordi | native | Golden pencilfish | |
| Characiformes | Lebiasinidae | Nannostomus bifasciatus | native | Whiteside pencilfish | |
| Characiformes | Lebiasinidae | Nannostomus marginatus | native | Dwarf pencilfish | |
| Clupeiformes | Clupeidae | Odontognathus mucronatus | native | Guiana longfin herring | Sardien |
| Perciformes | Carangidae | Oligoplites palometa | native | Maracaibo leatherjacket | Jack |
| Perciformes | Cichlidae | Oreochromis mossambicus | introduced | Mozambique tilapia | Tilapia |
| Perciformes | Sciaenidae | Pachypops fourcroi | native | Guyanan croaker | |
| Characiformes | Parodontidae | Parodon guyanensis | native | ||
| Siluriformes | Loricariidae | Parotocinclus britskii | native | ||
| Clupeiformes | Pristigasteridae | Pellona flavipinnis | native | Yellowfin river pellona | |
| Characiformes | Characidae | Phenacogaster microstictus | native | ||
| Characiformes | Characidae | Piabucus dentatus | native | ||
| Siluriformes | Heptapteridae | Pimelodella cristata | native | Dyaki | |
| Siluriformes | Heptapteridae | Pimelodella geryi | native | ||
| Siluriformes | Heptapteridae | Pimelodella macturki | native | ||
| Siluriformes | Pimelodidae | Pimelodus albofasciatus | native | ||
| Siluriformes | Pimelodidae | Pimelodus blochii | native | Bloch's catfish | |
| Siluriformes | Pimelodidae | Pimelodus ornatus | native | Katvis | |
| Perciformes | Sciaenidae | Plagioscion auratus | native | Black curbinata | |
| Perciformes | Sciaenidae | Plagioscion squamosissimus | native | South American silver croaker | |
| Perciformes | Sciaenidae | Plagioscion surinamensis | native | Pacora | Witte koebi |
| Siluriformes | Doradidae | Platydoras costatus | native | Raphael catfish | Corome |
| Siluriformes | Aspredinidae | Platystacus cotylephorus | native | Banded banjo | |
| Cyprinodontiformes | Poeciliidae | Poecilia vivipara | native | ||
| Perciformes | Polycentridae | Polycentrus schomburgkii | native | Guyana leaffish | |
| Perciformes | Haemulidae | Pomadasys crocro | native | Burro grunt | |
| Characiformes | Characidae | Poptella brevispina | native | ||
| Characiformes | Characidae | Poptella longipinnis | native | ||
| Beloniformes | Belonidae | Potamorrhaphis guianensis | native | ||
| Rajiformes | Potamotrygonidae | Potamotrygon boesemani | native | ||
| Rajiformes | Potamotrygonidae | Potamotrygon hystrix | questionable | Porcupine river stingray | Liba spari |
| Rajiformes | Potamotrygonidae | Potamotrygon orbignyi | native | Smooth back river stingray | Tjoeboela |
| Pristiformes | Pristidae | Pristis microdon | native | Largetooth sawfish | Krarin |
| Pristiformes | Pristidae | Pristis pectinata | native | Smalltooth sawfish | |
| Characiformes | Characidae | Pristobrycon striolatus | native | ||
| Characiformes | Prochilodontidae | Prochilodus rubrotaeniatus | native | Alumassee | |
| Siluriformes | Loricariidae | Pseudacanthicus fordii | native | ||
| Siluriformes | Loricariidae | Pseudacanthicus serratus | native | ||
| Siluriformes | Loricariidae | Pseudancistrus barbatus | native | Bearded catfish | |
| Siluriformes | Loricariidae | Pseudancistrus brevispinis | native | ||
| Siluriformes | Loricariidae | Pseudancistrus corantijniensis | native | ||
| Siluriformes | Loricariidae | Pseudancistrus depressus | native | ||
| Siluriformes | Auchenipteridae | Pseudauchenipterus nodosus | native | Cocosoda catfish | |
| Siluriformes | Pseudopimelodidae | Pseudopimelodus bufonius | native | ||
| Siluriformes | Pimelodidae | Pseudoplatystoma fasciatum | native | Barred sorubim | Spikridjaki |
| Beloniformes | Belonidae | Pseudotylosurus microps | native | ||
| Clupeiformes | Engraulidae | Pterengraulis atherinoides | native | Wingfin anchovy | Krafana |
| Siluriformes | Doradidae | Pterodoras granulosus | native | Granulated catfish | |
| Perciformes | Cichlidae | Pterophyllum scalare | introduced | Freshwater angelfish | |
| Cypriniformes | Cyprinidae | Puntius tetrazona | introduced | Sumatra barb | |
| Characiformes | Characidae | Pygopristis denticulata | native | Lobetoothed piranha | |
| Characiformes | Lebiasinidae | Pyrrhulina filamentosa | native | Matoeli | |
| Characiformes | Lebiasinidae | Pyrrhulina stoli | native | ||
| Siluriformes | Heptapteridae | Rhamdia quelen | native | ||
| Gymnotiformes | Rhamphichthyidae | Rhamphichthys rostratus | native | ||
| Clupeiformes | Clupeidae | Rhinosardinia amazonica | native | Amazon spinejaw sprat | |
| Clupeiformes | Clupeidae | Rhinosardinia bahiensis | native | Bahia sprat | |
| Siluriformes | Loricariidae | Rineloricaria stewarti | native | ||
| Cyprinodontiformes | Rivulidae | Rivulus agilae | native | ||
| Cyprinodontiformes | Rivulidae | Rivulus amphoreus | endemic | ||
| Cyprinodontiformes | Rivulidae | Rivulus frenatus | native | ||
| Cyprinodontiformes | Rivulidae | Rivulus lungi | native | ||
| Cyprinodontiformes | Rivulidae | Rivulus stagnatus | native | ||
| Characiformes | Characidae | Roeboexodon guyanensis | native | ||
| Characiformes | Characidae | Roeboides thurni | native | ||
| Perciformes | Cichlidae | Sarotherodon melanotheron melanotheron | introduced | Blackchin tilapia | |
| Perciformes | Cichlidae | Satanoperca jurupari | misidentification | Demon eartheater | |
| Perciformes | Cichlidae | Satanoperca leucosticta | native | ||
| Siluriformes | Ariidae | Sciades couma | native | Couma sea catfish | |
| Siluriformes | Ariidae | Sciades herzbergii | native | Pemecou sea catfish | Spikridjaki |
| Characiformes | Characidae | Scissor macrocephalus | native | ||
| Characiformes | Prochilodontidae | Semaprochilodus varii | native | ||
| Characiformes | Characidae | Serrasalmus eigenmanni | native | ||
| Characiformes | Characidae | Serrasalmus rhombeus | native | Redeye piranha | |
| Characiformes | Characidae | Serrasalmus spilopleura | native | Speckled piranha | |
| Siluriformes | Loricariidae | Squaliforma tenuis | native | ||
| Characiformes | Curimatidae | Steindachnerina varii | native | ||
| Gymnotiformes | Sternopygidae | Sternopygus macrurus | native | Longtail knifefish | Logo logo |
| Beloniformes | Belonidae | Strongylura marina | native | Atlantic needlefish | |
| Perciformes | Cichlidae | Symphysodon aequifasciatus | introduced | Blue discus | |
| Synbranchiformes | Synbranchidae | Synbranchus marmoratus | native | Marbled swamp eel | |
| Siluriformes | Auchenipteridae | Tatia brunnea | native | ||
| Siluriformes | Auchenipteridae | Tatia creutzbergi | native | ||
| Characiformes | Characidae | Tetragonopterus chalceus | native | ||
| Characiformes | Characidae | Tetragonopterus lemniscatus | native | ||
| Characiformes | Characidae | Thayeria ifati | misidentification | ||
| Characiformes | Characidae | Tometes lebaili | native | ||
| Cyprinodontiformes | Poeciliidae | Tomeurus gracilis | native | ||
| Siluriformes | Auchenipteridae | Trachelyopterus galeatus | native | Noja | |
| Characiformes | Characidae | Triportheus brachipomus | native | ||
| Characiformes | Characidae | Triportheus rotundatus | native |