''Iracema caiana'' is a species of freshwater ray-finned fish belonging to the family Rhamphichthyidae, the sand knifefishes. This species is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

where it is found in the

Jauaperi River The Jauaperi River () is a river of Amazonas state in northwestern Brazil, a tributary of the Rio Negro. The lower section of the river forms part of the border between Amazonas and Roraima Roraima ( ) is one of the 26 states of Brazil. Lo ...

basin. It is the only member of its genus.

References

* Rhamphichthyidae Knifefish of Brazil Endemic fish of Brazil Fish described in 1996 {{gymnotiformes-stub