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''Ptychochromis'' is a genus of cichlids endemic to rivers and lakes in Madagascar. One species (''P. grandidieri'') can also be seen in brackish water.〔Stiassny, M.L.J. & 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: 1-56.''〕 Most species in this genus are threatened, and ''P. onilahy'' is probably extinct.〔 Most reach a length of , but ''P. insolitus'' only reaches , while ''P. grandidieri'' and ''P. oligacanthus'' reach .〔 ==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 〔Martinez, C.M., Arroyave, J. & Sparks, J.S. (2015): A new species of ''Ptychochromis'' from southeastern Madagascar (Teleostei: Cichlidae). ''Zootaxa, 4044 (1): 79–92.''〕 * ''Ptychochromis oligacanthus'' (Bleeker, 1868) * ''Ptychochromis onilahy'' Stiassny & Sparks, 2006 Additionally, cichlids from the eastern Anosy Region in far southeastern Madagascar may actually represent two undescribed species, popularly known as ''Ptychochromis'' sp. "Tarantsy" and ''Ptychochromis'' sp. "Manampanihy".〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ptychochromis」の詳細全文を読む スポンサード リンク
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