Rhamdiopsis
Rhamdiopsis is a genus of three-barbeled catfishes native to South America where they are endemic to Brazil.  One species, R. krugi, is troglobitic.

Species
There are currently three recognized species in this genus:
 Rhamdiopsis krugi Bockmann & R. M. C. Castro, 2010
 Rhamdiopsis microcephala (Lütken, 1874)
 Rhamdiopsis moreirai Haseman, 1911

References

Heptapteridae
Catfish genera
Freshwater fish genera
Catfish of Brazil
Endemic fish of Brazil
Taxa described in 1911
Taxa named by John Diederich Haseman