Gymnarchus niloticus – commonly known as the aba, aba aba, frankfish, freshwater rat-tail, poisson-cheval, or African knifefish – is an electric fish, and the only species in the genus Gymnarchus and the family Gymnarchidae within the order Osteoglossiformes. It is found in swamps, lakes and rivers in the Nile, Turkana, Chad, Niger, Volta, Sen...
Found on
http://en.wikipedia.org/wiki/Gymnarchus
(from the article `osteoglossomorph`) ...to swim with little body movement, using instead the dorsal fins for propulsion. This unusual swimming method is probably associated with the use ...
Found on
http://www.britannica.com/eb/a-z/g/85
No exact match found.
