Some Tropical and Southern freshwater fishes of the world
Rajaformes
POTAMOTRIGONIDAE
Lepidosireniformes
LEPIDOSIRENIDAE
Osteoglossiformes
OSTEOGLOSSIDAE
NOTOPTERIDAE
MORMYRIDAE
GYMNARCHIDAE
Salmoniformes
GALAXIIDAE
Characiformes
CHARACIDAE
ERYTHRINIDAE
CTENOLUCIIDAE
GASTEROPELECIDAE
CURIMATIDAE
ANOSTOMIDAE
Gymnotoidei
GYMNOTIDAE
Cypriniformes
HOMALOPTERIDAE
COBITIDAE
Siluriformes
BAGRIDAE
CLARIIDAE
TRICHOMYCTERIDAE
ASTROBLEPIDAE
LORICARIIDAE
ASPRIDINIDAE
Cyprinodontiformes
ANABLEPIDAE
Perciformes
NANDIDAE
CICHLIDAE