''Lonchogenys ilisha'' is a species of

characin Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationsh ...

found in the Rio Negro in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

and Colombia. It is the only member of its genus.

References

* Acestrorhynchidae Monotypic fish genera Freshwater fish of Brazil Freshwater fish of Colombia Fish described in 1927 {{Characiformes-stub