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Families of Aquarium Fishes

Anabantiformes
Anabantoidei
Channoidei Nandoidei

Labyrinth fishes

Instead of gills, these fish use a rudimentary lung to obtain oxygen and are "air breathers". They have gills too, which they also use but can in fact drown if deprived of a source of air.



Atheridae
Elassomatidae
Melanotaeniidae Percichthyidae

Many related families

Shorefishes, pond and creek fish.





Cypriniformes
Cobitoidea
Cyprinoidea

Loaches


Cyprinodontiformes
Aplocheiloidei
Cyprinodontoidei Poeciliidae

Tooth-Carps

The egg laying tooth-carps ("Killifish") and the live bearing tooth-carps ("Livebearers").


Gobiiformes
Eleotridae
Gobioidei Odontobutidae

Gobies and sleepers



Siluriformes
Diplomystidae
Loricarioidei Siluroidei

Catfish


Synbranchiformes
Macrognathus Mastacembelus
Ophisternon Synbranchus

Eels


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Badidae Ambassidae Adrianichthyidae Arapaimidae Archiridae Batrachoidinae
Blenniidae cave Centrarchidae Channidae Datnioidae Dipnoi Engraulidae Esociformes Galaxiidae Gasterosteidae Gymnotiformes Hemiramphidae Indostomas Monodactylidae Mormyridae Mugilidae Ophidiiformes Osteoglossidae Pantodontidae Phractolaemidae Polypterus Polycentridae Potamotrygonidae Retropinnidae Scatophagidae Scorpaeniformes Syngnathidae Tarumaniidae Terapontidae Tetraodontidae Toxotidae Zenarchopteridae

Oddballs


Freshwater Aquarium Fishes






Encyclopedia Aquatica