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Freshwater Fish Species
All freshwater fish species found in rivers, lakes, streams, and ponds worldwide. From tiny tetras to the giant arapaima — covering every continent.
18,067
Total Species
1,926
Endangered (EN+CR)
1,910
Edible Species
204
Families
Isbrueckerichthys Calvus
Isbrueckerichthys calvus
Loricariidae
Least Concern
Isbrueckerichthys Duseni
Isbrueckerichthys duseni
Loricariidae
Least Concern
Isbrueckerichthys Saxicola
Isbrueckerichthys saxicola
Loricariidae
Critically Endangered
Ishi-Donko
Odontobutis hikimius
Odontobutidae
Near Threatened
Isiki loach
Oxynoemacheilus mesudae
Nemacheilidae
Endangered
Işıklı gudgeon
Gobio maeandricus
Gobionidae
Endangered
Island gudgeon
Bostrychus aruensis
Eleotridae
Data Deficient
Isle of Pines rivulus
Rivulus insulaepinorum
Rivulidae
Isok barb
Probarbus jullieni
Cyprinidae
Critically Endangered
Edible
Isorineloricaria Acuarius
Isorineloricaria acuarius
Loricariidae
Least Concern
Isorineloricaria Tenuicauda
Isorineloricaria tenuicauda
Loricariidae
Least Concern
Isorineloricaria Villarsi
Isorineloricaria villarsi
Loricariidae
Isparta minnow
Crossocheilus klatti
Cyprinidae
Endangered
Issyk-Kul dace
Leuciscus bergi
Cyprinidae
Vulnerable
Issyk-kul naked loach
Triplophysa ulacholica
Nemacheilidae
Least Concern
Issyk-kul' minnow
Phoxinus issykkulensis
Cyprinidae
Least Concern
Isthmian priapella
Priapella intermedia
Poeciliidae
Least Concern
Italian bleak
Alburnus albidus
Cyprinidae
Endangered
Italian Roach
Rutilus pigus
Cyprinidae
Vulnerable
Italian spring goby
Knipowitschia punctatissima
Gobiidae
Itapoá toothcarp
Phalloceros malabarbai
Poeciliidae
Least Concern
Ituglanis Agreste
Ituglanis agreste
Trichomycteridae
Data Deficient
Ituglanis Amazonicus
Ituglanis amazonicus
Trichomycteridae
Least Concern
Ituglanis Amphipotamus
Ituglanis amphipotamus
Trichomycteridae
Near Threatened
Ituglanis Apteryx
Ituglanis apteryx
Trichomycteridae
Data Deficient
Ituglanis Australis
Ituglanis australis
Trichomycteridae
Ituglanis Boitata
Ituglanis boitata
Trichomycteridae
Ituglanis Cahyensis
Ituglanis cahyensis
Trichomycteridae
Near Threatened
Ituglanis Compactus
Ituglanis compactus
Trichomycteridae
Data Deficient
Ituglanis Crispim
Ituglanis crispim
Trichomycteridae
Ituglanis Eichorniarum
Ituglanis eichorniarum
Trichomycteridae
Ituglanis Epikarsticus
Ituglanis epikarsticus
Trichomycteridae
Critically Endangered
Ituglanis Goya
Ituglanis goya
Trichomycteridae
Least Concern
Ituglanis Gracilior
Ituglanis gracilior
Trichomycteridae
Ituglanis Guayaberensis
Ituglanis guayaberensis
Trichomycteridae
Least Concern
Ituglanis Herberti
Ituglanis herberti
Trichomycteridae
Least Concern
Ituglanis Ina
Ituglanis ina
Trichomycteridae
Least Concern
Ituglanis Jaguarete
Ituglanis jaguarete
Trichomycteridae
Ituglanis Jussariensis
Ituglanis jussariensis
Trichomycteridae
Ituglanis Macunaima
Ituglanis macunaima
Trichomycteridae
Near Threatened
Ituglanis Mambai
Ituglanis mambai
Trichomycteridae
Critically Endangered
Ituglanis Metae
Ituglanis metae
Trichomycteridae
Least Concern
Ituglanis Nebulosus
Ituglanis nebulosus
Trichomycteridae
Ituglanis Paraguassuensis
Ituglanis paraguassuensis
Trichomycteridae
Near Threatened
Ituglanis Parahybae
Ituglanis parahybae
Trichomycteridae
Least Concern
Ituglanis Parkoi
Ituglanis parkoi
Trichomycteridae
Least Concern
Ituglanis Proops
Ituglanis proops
Trichomycteridae
Least Concern
Ituglanis Ramiroi
Ituglanis ramiroi
Trichomycteridae
Vulnerable