↑Reinthal, P.N. and M.L.J. Stiassny (1997) Revision of the Madagascan genus Ptychochromoides (Teleostei: Cichlidae), with description of a new species., Ichthyol. Explor. Freshwat. 7(4):353-368.
↑Stiassny, M.L.J. and J.S. Sparks (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., Am. Mus. Novit. 3535:55 p.
↑ 4.04.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
↑FishBase. Froese R. & Pauly D. (eds), 14 Hunyo 2011