The genus formerly included Katria katria, which was moved to its own genus in 2006.[4] There are currently three recognized species in Ptychochromoides:[5]
^Stiassny, M., and Sparks, J. S. (2006). Phylogeny and Taxonomic Revision of the endemic Malagasy genus Ptychochromis (Teleostei: Cichlidae), with the description of five new species and a diagnosis for Katria, new genus.American Museum Novitates 3535