Hemiodon depressusKner, 1853 Reganella depressa is the only species of the monotypic genus Reganella, a genus of the family Loricariidae of catfish (order Siluriformes).

Its phylogenetic position remains uncertain.

[1] This species is endemic to Brazil where it occurs in the middle Amazon basin, including the Negro, Tapajos, and Branco Rivers.

[1][2] R. depressa probably inhabits sandy substrates with flowing waters.

[1] R. depressa reaches a length of 11.3 centimetres (4.4 in) SL.