最初描述为 Ptychochromis insolitus:
ZooBank:79C990F7-936E-445B-B513-3758016469EA.
- Stiassny, Melanie & John 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". American Museum Novitates. (3535):1–55 (crc01327) (摘要)
保育: Ptychochromis insolitus 由国际自然保护联盟（IUCN）在濒危物种红色名录中为自然保育而进行了评估 evaluated (CR) 极危（Critically endangered） (2016). Ptychochromis insolitus appears to be rare throughout its limited range, and few specimens have been collected despite sizeable collections of other species having been made in this region, including other cichlids (e.g. Paretroplus nourissati and P. cf. kieneri) (Stiassny & Sparks, 2006).