Dupouyichthys is genus of banjo catfishes in the family Aspredinidae. It is monotypic, being represented by the single species Dupouyichthys sapito.[1] This species appears to be restricted to the Magdalena and Maracaibo basins. D. sapito is a small, armored aspredinid, growing up to 27 millimetres (1.1 in) standard length (SL), distinguished from all other aspredinids by having only one set of paired pre-anal-fin plates. Also, the bony ornamentation of its skull is better developed than its close relatives.[2] It is found in river banks with vegetation.