Reganella
Reganella depressa is the only species of the monotypic genus Reganella, a genus of the family Loricariidae of catfish. R. depressa is a poorly known species and uncommon in collections. Its phylogenetic position remains uncertain.
This species is endemic to Brazil where it occurs in the middle Amazon basin, including the Negro (Amazon)|Negro], Tapajos, and Branco Rivers. R. depressa probably inhabits sandy substrates with flowing waters. R. depressa reaches a length of SL.