Tridentopsis

Tridentopsis is a genus of pencil catfishes native to South America.

Species
There are currently three recognized species in this genus:
 * Tridentopsis cahuali Azpelicueta, 1990
 * Tridentopsis pearsoni Myers, 1925
 * Tridentopsis tocantinsi La Monte, 1939

T. cahuali originates from the Paraguay River basin in Argentina. T. pearsoni inhabits the upper Amazon River basin in Bolivia. T. tocantinsi lives in the Tocantins River basin in Brazil. Tridentopsis species grow to about 2.2–2.3 centimetres (.87–.91 in) SL.