Naked characin is a species of fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 in the Characidae

Characidae

The Characidae, characids or characins are a family of freshwater subtropical and tropical fish, belonging to the order Characiformes. The name "characins" is the historical one, but scientists today tend to prefer "characids" to reflect their status as a by and large monophyletic group at family...

family. It is the only member of the genus Gymnocharacinus. Found only in northern Patagonia in Argentina. This fish has no scales. It is endangered because it is losing its habitat.
Size / Weight / Age
Max length : 7.5 cm.Environment Demersal; freshwater.Climate/Range Subtropical; 22°C - 26°C (Ref. 35685);35°S36°S. Color is dark brown, greenish, the belly is cream; there is a copper-colored band on the flanks
Longfei Sun

• World Conservation Monitoring Centre 1996. Gymnocharacinus bergii. 2006 IUCN Red List of Threatened Species. Downloaded on 4 August 2007.