RachoviscusRachoviscus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. These threatened fish are endemic to coastal river basins in Bahia, Paraná and Santa Catarina in eastern Brazil.SpeciesRachoviscus contains the following valid species:Rachoviscus crassiceps G. S. Myers, 1926Rachoviscus graciliceps S. H. Weitzman & da Cruz, 1981