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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
Olmec priapella
Priapella olmecae
Poeciliidae
Endangered
Olomina toothcarp
Brachyrhaphis olomina
Poeciliidae
Data Deficient
Olympic mudminnow
Novumbra hubbsi
Esocidae
Least Concern
Olyra Astrifera
Olyra astrifera
Olyridae
Olyra Collettii
Olyra collettii
Olyridae
Olyra Horae
Olyra horae
Olyridae
Data Deficient
Olyra Kempi
Olyra kempi
Olyridae
Least Concern
Olyra Kolasibensis
Olyra kolasibensis
Olyridae
Olyra Longicaudata
Olyra longicaudata
Olyridae
Least Concern
Olyra Saginata
Olyra saginata
Olyridae
Olyra Sancta
Olyra sancta
Olyridae
Oman freshwater goby
Glossogobius tenuiformis
Gobiidae
Ometepec killifish
Profundulus emilioi
Profundulidae
Omo lampeye
Eremodon jeanneli
Least Concern
Ompok Binotatus
Ompok binotatus
Siluridae
Endangered
Ompok Borneensis
Ompok borneensis
Siluridae
Near Threatened
Ompok Brevirictus
Ompok brevirictus
Siluridae
Endangered
Ompok Canio
Ompok canio
Siluridae
Ompok Fumidus
Ompok fumidus
Siluridae
Near Threatened
Ompok Goae
Ompok goae
Siluridae
Data Deficient
Ompok Hypophthalmus
Ompok hypophthalmus
Siluridae
Least Concern
Ompok Javanensis
Ompok javanensis
Siluridae
Ompok Jaynei
Ompok jaynei
Siluridae
Ompok Karunkodu
Ompok karunkodu
Siluridae
Endangered
Ompok Leiacanthus
Ompok leiacanthus
Siluridae
Near Threatened
Ompok Miostoma
Ompok miostoma
Siluridae
Near Threatened
Ompok Platyrhynchus
Ompok platyrhynchus
Siluridae
Data Deficient
Ompok Pluriradiatus
Ompok pluriradiatus
Siluridae
Endangered
Ompok Siluroides
Ompok siluroides
Siluridae
Least Concern
Ompok Sindensis
Ompok sindensis
Siluridae
Ompok Supernus
Ompok supernus
Siluridae
Vulnerable
Ompok Urbaini
Ompok urbaini
Siluridae
Least Concern
Ompok Weberi
Ompok weberi
Siluridae
Near Threatened
Onaç spring minnow
Pseudophoxinus ninae
Cyprinidae
Critically Endangered
One spot toothcarp
Phalloceros uai
Poeciliidae
Least Concern
One-and-a-half-stripe hap
Protomelas insignis
Cichlidae
Least Concern
Edible
One-stripe spinyeel
Macrognathus aral
Mastacembelidae
Least Concern
Edible
Oneline pencilfish
Nannostomus unifasciatus
Lebiasinidae
Least Concern
Edible
Oneline tetra
Nannaethiops unitaeniatus
Distichodontidae
Least Concern
Onesided livebearer
Jenynsia multidentata
Anablepidae
Least Concern
Edible
Onesided livebearer
Jenynsia lineata
Anablepidae
Least Concern
Edible
Onespot barb
Puntius terio
Cyprinidae
Least Concern
Edible
Onespot squeaker
Synodontis notatus
Mochokidae
Least Concern
Onestriped livebearer
Jenynsia unitaenia
Anablepidae
Least Concern
Onychostoma Angustistomatum
Onychostoma angustistomatum
Cyprinidae
Critically Endangered
Onychostoma Barbatum
Onychostoma barbatum
Cyprinidae
Data Deficient
Onychostoma Breve
Onychostoma breve
Cyprinidae
Data Deficient
Onychostoma Daduense
Onychostoma daduense
Cyprinidae