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Ptychochromis insolitus : ウィキペディア英語版 | Ptychochromis insolitus
''Ptychochromis insolitus'', also known as the Mangarahara cichlid, is a species of cichlid endemic to the Amboaboa and Mangarahara Rivers near Mandritsara in northern Madagascar.〔Stiassny, M., and 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.〕 It is listed as Critically Endangered by the IUCN, but until its rediscovery in 2013, it was feared that the last remaining wild population had disappeared.〔 This rare species is threatened by habitat loss and introduced species.〔 Prior to its official description, it was sometimes known as ''Ptychochromis'' sp. nov. "Joba mena" or ''Ptychochromis'' sp. nov. "Mangarahara".〔〔 Two cichlids from another genus, ''Paretroplus nourissati'' and ''P. gymnopreopercularis'', and a round herring, ''Sauvagella robusta'', are restricted to the same region as ''Ptychochromis insolitus''.〔Sparks, J. S. (2008). ''Phylogeny of the Cichlid Subfamily Etroplinae and Taxonomic Revision of the Malagasy Cichlid Genus Paretroplus (Teleostei: Cichlidae).'' Bulletin of the American Museum of Natural History Number 314 :1-151〕〔Stiassny, M.L.J. (2002). ''Revision of Sauvagella Bertin (Clupeidae: Pellonulinae: Ehiravini) with a description of a new species from the freshwaters of Madagascar and diagnosis of Ehiravini.'' Copeia 2002(1): 67-76.〕 This species can reach a length of SL. ==In captivity== , only three specimens were known to exist in captivity; two males in London Zoo and one male in the Berlin Aquarium. An appeal to collectors was put out in May 2013 to attempt to find a suitable female in a private collection for breeding purposes. The last known female was killed by a male at the Berlin Aquarium while trying to mate.〔harpers.org july 2013〕 In late 2013, a remnant population was discovered in the wild after a local tip-off, and 18, including some females, have been moved into captivity.
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