Ptychochromis

Ptychochromis is a genus of cichlids endemic to rivers and lakes in Madagascar. One species (P. grandidieri) can also be seen in brackish water. Most species in this genus are threatened, and P. onilahy is probably extinct. Most reach a length of , but P. insolitus reaches , while P. grandidieri and P. oligacanthus reach and respectively. The largest species was P. onilahy which may have reached as much as if reports of fishermen are to be believed.

==Species== There are currently 10 recognized species in this genus: Ptychochromis curvidens Stiassny & Sparks, 2006 Ptychochromis ernestmagnusi Sparks & Stiassny, 2010 Ptychochromis grandidieri Sauvage, 1882 Ptychochromis inornatus Sparks, 2002 Ptychochromis insolitus Stiassny & Sparks, 2006 Ptychochromis loisellei Stiassny & Sparks, 2006 Ptychochromis makira Stiassny & Sparks, 2006 Ptychochromis mainty C. M. Martinez, Arroyave-Gutiérrez & Sparks, 2015 Ptychochromis oligacanthus (Bleeker, 1868) † Ptychochromis onilahy Stiassny & Sparks, 2006