| Citation | 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. 3535:1-55. |
| Ref. | Stiassny, M.L.J. and J.S. Sparks, 2006 |
| Page | 14;fig.11 |
| Named Used as Valid | Ptychochromis onilahy |
| Comment | original description of Ptychochromis onilahy |
| Locality | Madagascar |
| Distribution | |
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