| Order |
Family |
Species |
Status |
FB name |
Name |
| Characiformes |
Acestrorhynchidae |
Acestrorhynchus falcatus
|
questionable | | Dentudo dorado |
| Siluriformes |
Auchenipteridae |
Ageneiosus militaris
|
native | | Catfish |
| Characiformes |
Characidae |
Astyanacinus platensis
|
native | | Tetra |
| Characiformes |
Characidae |
Astyanax bimaculatus
|
questionable | Twospot astyanax | Mojarra piava |
| Characiformes |
Characidae |
Astyanax jacuhiensis
|
native | | |
| Characiformes |
Characidae |
Astyanax stenohalinus
|
native | | Tetra |
| Siluriformes |
Auchenipteridae |
Auchenipterus nigripinnis
|
native | | Catfish |
| Perciformes |
Cichlidae |
Australoheros charrua
|
native | | |
| Perciformes |
Cichlidae |
Australoheros facetus
|
native | Chameleon cichlid | Castañeta |
| Perciformes |
Cichlidae |
Australoheros minuano
|
native | | |
| Perciformes |
Cichlidae |
Australoheros scitulus
|
native | | |
| Cyprinodontiformes |
Rivulidae |
Austrolebias adloffi
|
questionable | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias affinis
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias alexandri
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias arachan
|
native | | |
| Cyprinodontiformes |
Rivulidae |
Austrolebias bellottii
|
native | Argentine pearlfish | Cinolebia |
| Cyprinodontiformes |
Rivulidae |
Austrolebias cinereus
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias duraznensis
|
native | | |
| Cyprinodontiformes |
Rivulidae |
Austrolebias gymnoventris
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias luteoflammulatus
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias luzardoi
|
native | | |
| Cyprinodontiformes |
Rivulidae |
Austrolebias melanoorus
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias nigripinnis
|
native | Blackfin pearlfish | Cinolebia |
| Cyprinodontiformes |
Rivulidae |
Austrolebias nioni
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias vazferreirai
|
native | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Austrolebias viarius
|
endemic | | Killifish |
| Gymnotiformes |
Hypopomidae |
Brachyhypopomus bombilla
|
native | | |
| Gymnotiformes |
Hypopomidae |
Brachyhypopomus draco
|
native | | |
| Gymnotiformes |
Hypopomidae |
Brachyhypopomus pinnicaudatus
|
native | | |
| Characiformes |
Characidae |
Brycon orbignyanus
|
native | | Pirapitá |
| Characiformes |
Characidae |
Bryconamericus iheringii
|
native | | Tetra |
| Characiformes |
Characidae |
Bryconamericus stramineus
|
native | | Tetra |
| Siluriformes |
Aspredinidae |
Bunocephalus doriae
|
native | | Catfish |
| Siluriformes |
Callichthyidae |
Callichthys callichthys
|
native | Cascarudo | Cascarudo |
| Cypriniformes |
Cyprinidae |
Carassius auratus auratus
|
introduced | Goldfish | |
| Pleuronectiformes |
Achiridae |
Catathyridium jenynsii
|
native | | Lenguado |
| Pleuronectiformes |
Achiridae |
Catathyridium lorentzii
|
native | | Lenguado |
| Siluriformes |
Cetopsidae |
Cetopsis gobioides
|
native | | |
| Characiformes |
Crenuchidae |
Characidium zebra
|
questionable | | |
| Characiformes |
Characidae |
Charax gibbosus
|
misidentification | Glass headstander | Dentudo jorobado chico |
| Characiformes |
Characidae |
Charax stenopterus
|
native | | Glass headstander |
| Characiformes |
Characidae |
Cheirodon ibicuhiensis
|
native | | Mojarrita |
| Characiformes |
Characidae |
Cheirodon interruptus
|
native | Uruguay tetra | Mojarrita |
| Cyprinodontiformes |
Poeciliidae |
Cnesterodon carnegiei
|
native | | Madrecita |
| Cyprinodontiformes |
Poeciliidae |
Cnesterodon holopteros
|
native | | |
| Siluriformes |
Callichthyidae |
Corydoras paleatus
|
native | Peppered corydoras | Chavito |
| Perciformes |
Cichlidae |
Crenicichla celidochilus
|
native | | Pike cichlid |
| Perciformes |
Cichlidae |
Crenicichla lepidota
|
native | Pike cichlid | Cabeza amarga |
| Perciformes |
Cichlidae |
Crenicichla punctata
|
native | | |
| Perciformes |
Cichlidae |
Crenicichla scottii
|
native | | Pike cichlid |
| Perciformes |
Cichlidae |
Crenicichla vittata
|
native | | Pike cichlid |
| Cypriniformes |
Cyprinidae |
Ctenopharyngodon idella
|
introduced | Grass carp | |
| Characiformes |
Characidae |
Cyanocharax uruguayensis
|
native | | Tetra |
| Cyprinodontiformes |
Rivulidae |
Cynolebias reicherti
|
native | | |
| Cyprinodontiformes |
Rivulidae |
Cynopoecilus melanotaenia
|
native | | Killifish |
| Characiformes |
Characidae |
Cynopotamus argenteus
|
native | | Dientudo jorobado |
| Characiformes |
Curimatidae |
Cyphocharax platanus
|
native | | Characin |
| Characiformes |
Curimatidae |
Cyphocharax voga
|
native | | Characin |
| Cypriniformes |
Cyprinidae |
Cyprinus carpio carpio
|
introduced | Common carp | Carpa |
| Characiformes |
Characidae |
Diapoma speculiferum
|
native | | Tetra |
| Characiformes |
Characidae |
Diapoma terofali
|
native | | Tetra |
| Gymnotiformes |
Sternopygidae |
Eigenmannia trilineata
|
native | | Señorita |
| Gymnotiformes |
Sternopygidae |
Eigenmannia virescens
|
native | Glass knifefish | Señorita |
| Characiformes |
Characidae |
Galeocharax humeralis
|
native | | Dientudo |
| Perciformes |
Cichlidae |
Geophagus brasiliensis
|
native | Pearl cichlid | Castañeta |
| Perciformes |
Cichlidae |
Gymnogeophagus balzanii
|
native | Argentine humphead | Castañeta |
| Perciformes |
Cichlidae |
Gymnogeophagus gymnogenys
|
native | Smooth-cheek eartheater | Castañeta |
| Perciformes |
Cichlidae |
Gymnogeophagus meridionalis
|
native | | Earth eater |
| Perciformes |
Cichlidae |
Gymnogeophagus rhabdotus
|
native | Stripefin eartheater | Castañeta |
| Gymnotiformes |
Gymnotidae |
Gymnotus carapo
|
native | Banded knifefish | Carapo |
| Siluriformes |
Pimelodidae |
Hemisorubim platyrhynchos
|
questionable | Porthole shovelnose catfish | |
| Siluriformes |
Heptapteridae |
Heptapterus mustelinus
|
native | | Catfish |
| Characiformes |
Characidae |
Heterocheirodon jacuiensis
|
native | | |
| Characiformes |
Characidae |
Heterocheirodon yatai
|
native | | Tetra |
| Siluriformes |
Loricariidae |
Hisonotus candombe
|
native | | |
| Siluriformes |
Loricariidae |
Hisonotus charrua
|
native | | |
| Siluriformes |
Loricariidae |
Hisonotus ringueleti
|
native | | |
| Siluriformes |
Trichomycteridae |
Homodiaetus anisitsi
|
native | | Chupa-chupa |
| Characiformes |
Erythrinidae |
Hoplias malabaricus
|
native | Trahira | Tararira |
| Siluriformes |
Callichthyidae |
Hoplosternum littorale
|
native | Hassar | Cascarudo |
| Characiformes |
Characidae |
Hyphessobrycon luetkenii
|
native | | Tetra |
| Characiformes |
Characidae |
Hyphessobrycon uruguayensis
|
native | | Tetra |
| Siluriformes |
Loricariidae |
Hypostomus commersoni
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Hypostomus laplatae
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Hypostomus luteomaculatus
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Hypostomus regani
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Hypostomus ternetzi
|
native | | |
| Siluriformes |
Loricariidae |
Hypostomus uruguayensis
|
questionable | | Catfish |
| Siluriformes |
Pimelodidae |
Iheringichthys labrosus
|
native | | |
| Cyprinodontiformes |
Anablepidae |
Jenynsia lineata
|
native | Onesided livebearer | Overito |
| Cyprinodontiformes |
Anablepidae |
Jenynsia multidentata
|
native | Rio de la Plata onesided livebearer | Overito |
| Cyprinodontiformes |
Anablepidae |
Jenynsia onca
|
native | | |
| Characiformes |
Anostomidae |
Leporinus obtusidens
|
native | | Characin |
| Characiformes |
Anostomidae |
Leporinus striatus
|
native | | Characin |
| Siluriformes |
Loricariidae |
Loricariichthys anus
|
native | | Catfish |
| Siluriformes |
Pimelodidae |
Luciopimelodus pati
|
questionable | Pati | Patí |
| Clupeiformes |
Engraulidae |
Lycengraulis grossidens
|
native | Atlantic sabretooth anchovy | Anchoita |
| Characiformes |
Characidae |
Macropsobrycon uruguayanae
|
native | | Mojarrita |
| Siluriformes |
Loricariidae |
Megalancistrus parananus
|
native | | Catfish |
| Cyprinodontiformes |
Rivulidae |
Megalebias cheradophilus
|
endemic | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Megalebias prognathus
|
endemic | | Killifish |
| Cyprinodontiformes |
Rivulidae |
Megalebias wolterstorffi
|
native | | Killifish |
| Atheriniformes |
Atherinopsidae |
Odontesthes argentinensis
|
native | | |
| Atheriniformes |
Atherinopsidae |
Odontesthes bonariensis
|
native | Pejerrey | Pejerrey |
| Atheriniformes |
Atherinopsidae |
Odontesthes humensis
|
native | | Silverside |
| Atheriniformes |
Atherinopsidae |
Odontesthes incisa
|
native | | Silverside |
| Atheriniformes |
Atherinopsidae |
Odontesthes orientalis
|
native | | |
| Atheriniformes |
Atherinopsidae |
Odontesthes perugiae
|
native | | Silverside |
| Atheriniformes |
Atherinopsidae |
Odontesthes retropinnis
|
native | | Silverside |
| Characiformes |
Characidae |
Oligosarcus argenteus
|
misidentification | | |
| Characiformes |
Characidae |
Oligosarcus jenynsii
|
native | | Pike characin |
| Salmoniformes |
Salmonidae |
Oncorhynchus mykiss
|
not established | Rainbow trout | |
| Siluriformes |
Loricariidae |
Otocinclus flexilis
|
native | | Catfish |
| Siluriformes |
Doradidae |
Oxydoras kneri
|
native | | Catfish |
| Perciformes |
Sciaenidae |
Pachyurus bonariensis
|
native | La Plata croaker | Corvina de rió |
| Siluriformes |
Loricariidae |
Paraloricaria commersonoides
|
native | | Catfish |
| Siluriformes |
Pimelodidae |
Parapimelodus valenciennis
|
native | | Catfish |
| Siluriformes |
Trichomycteridae |
Paravandellia oxyptera
|
native | Pantanal parasitic catfish | Chupa-chupa |
| Clupeiformes |
Pristigasteridae |
Pellona flavipinnis
|
native | Yellowfin river pellona | Sardina |
| Cyprinodontiformes |
Poeciliidae |
Phalloceros caudimaculatus
|
native | Dusky millions fish | Madrecita |
| Cyprinodontiformes |
Poeciliidae |
Phalloptychus januarius
|
native | | Madrecita |
| Characiformes |
Characidae |
Piaractus mesopotamicus
|
native | Pacu | |
| Siluriformes |
Pimelodidae |
Pimelodus absconditus
|
questionable | | |
| Siluriformes |
Pimelodidae |
Pimelodus pintado
|
native | | |
| Perciformes |
Sciaenidae |
Plagioscion ternetzi
|
native | Freshwater croaker | Corvina de rió |
| Clupeiformes |
Clupeidae |
Platanichthys platana
|
native | River Plate sprat | Sardina |
| Siluriformes |
Doradidae |
Platydoras armatulus
|
native | Southern striped raphael | |
| Cyprinodontiformes |
Poeciliidae |
Poecilia vivipara
|
native | | |
| Characiformes |
Curimatidae |
Potamorhina squamoralevis
|
native | | Characin |
| Rajiformes |
Potamotrygonidae |
Potamotrygon brachyura
|
native | Short-tailed river stingray | |
| Rajiformes |
Potamotrygonidae |
Potamotrygon hystrix
|
native | Porcupine river stingray | Chucho de río |
| Rajiformes |
Potamotrygonidae |
Potamotrygon motoro
|
native | Ocellate river stingray | Chucho de río |
| Characiformes |
Prochilodontidae |
Prochilodus lineatus
|
native | Streaked prochilod | Sábalo |
| Characiformes |
Characidae |
Pseudocorynopoma doriae
|
native | Dragonfin tetra | Mojarra aletuda |
| Siluriformes |
Loricariidae |
Pseudohemiodon devincenzii
|
native | | Catfish |
| Siluriformes |
Pseudopimelodidae |
Pseudopimelodus mangurus
|
native | | |
| Siluriformes |
Pimelodidae |
Pseudoplatystoma corruscans
|
native | Spotted sorubim | Surubí |
| Siluriformes |
Pimelodidae |
Pseudoplatystoma fasciatum
|
questionable | Barred sorubim | Surubí atigrado |
| Siluriformes |
Doradidae |
Pterodoras granulosus
|
native | Granulated catfish | Armado común |
| Characiformes |
Characidae |
Pygocentrus nattereri
|
native | Red piranha | Palometa de rio |
| Clupeiformes |
Clupeidae |
Ramnogaster melanostoma
|
native | Uruguay river sprat | Sardina |
| Siluriformes |
Heptapteridae |
Rhamdia quelen
|
native | | Catfish |
| Characiformes |
Cynodontidae |
Rhaphiodon vulpinus
|
native | Biara | Chafalote |
| Siluriformes |
Doradidae |
Rhinodoras dorbignyi
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Ricola macrops
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Rineloricaria baliola
|
native | | |
| Siluriformes |
Loricariidae |
Rineloricaria felipponei
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Rineloricaria isaaci
|
native | | |
| Siluriformes |
Loricariidae |
Rineloricaria pareiacantha
|
native | | Catfish |
| Siluriformes |
Loricariidae |
Rineloricaria thrissoceps
|
native | | Catfish |
| Characiformes |
Characidae |
Roeboides microlepis
|
native | | Dientudo jorobado |
| Characiformes |
Characidae |
Roeboides paranensis
|
native | Parana scale-eating characin | |
| Characiformes |
Characidae |
Roeboides prognathus
|
native | | Dientudo jorobado |
| Characiformes |
Characidae |
Salminus brasiliensis
|
native | Jaw characin | Pirayú |
| Siluriformes |
Trichomycteridae |
Scleronema angustirostre
|
native | | |
| Characiformes |
Characidae |
Serrapinnus calliurus
|
native | | |
| Characiformes |
Characidae |
Serrasalmus maculatus
|
native | | |
| Characiformes |
Characidae |
Serrasalmus marginatus
|
native | | |
| Characiformes |
Characidae |
Serrasalmus spilopleura
|
native | Speckled piranha | Piraña |
| Siluriformes |
Pimelodidae |
Sorubim lima
|
native | Duckbill catfish | Cucharón |
| Siluriformes |
Pimelodidae |
Steindachneridion scriptum
|
native | | Catfish |
| Characiformes |
Curimatidae |
Steindachnerina biornata
|
native | | Characin |
| Characiformes |
Curimatidae |
Steindachnerina brevipinna
|
native | | Characin |
| Characiformes |
Curimatidae |
Steindachnerina conspersa
|
native | | |
| Synbranchiformes |
Synbranchidae |
Synbranchus marmoratus
|
native | Marbled swamp eel | Anguila |
| Characiformes |
Characidae |
Tetragonopterus argenteus
|
native | | |
| Siluriformes |
Auchenipteridae |
Trachelyopterus teaguei
|
native | | Torito |
| Characiformes |
Characidae |
Triportheus paranensis
|
native | Tetra | Mojarra |