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''Paretroplus'' is a genus of fishes in the cichlid family, all of which are endemic to lakes and rivers of Madagascar. The vast majority are threatened and restricted to the northwestern part of the island.〔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〕 Only ''P. polyactis'' is found in the southern half of Madagascar and only ''P. polyactis'' and ''P. gymnopreopercularis'' are found in eastern drainages.〔〔Sparks, J. S. and Schelly, R. C. (2011). ''A new species of Paretroplus (Teleostei: Cichlidae: Etroplinae) from northeastern Madagascar, with a phylogeny and revised diagnosis for the P. damii clade.'' Zootaxa 2768: 55–68.〕 Most are restricted to freshwater, but at least ''P. polyactis'' and ''P. maromandia'' can also be seen in brackish habitats.〔 They are more closely related to the genus ''Etroplus'' from India and Sri Lanka than they are to other cichlids from Madagascar (subfamilies Paratilapiinae and Ptychochrominae).〔 (2004): Molecular phylogeny and biogeography of the Malagasy and South Asian cichlids (Teleostei: Perciformes: Cichlidae). ''Molecular Phylogenetics and Evolution'' 30(3): 599–614. (HTML abstract)〕 Their maximum length varies greatly depending on the exact species, ranging from in ''P. kieneri'' and ''P. gymnopreopercularis'' to almost in ''P. damii''.〔 ''Paretroplus'' includes both relatively slender-bodied species (''P. damii'', ''P. gymnopreopercularis'', ''P. kieneri'', ''P. lamenabe'', ''P. loisellei'', ''P. nourissati'' and ''P. tsimoly'') and relatively deep-bodied species (all remaining).〔 ==Species== There are currently 13 recognized species in this genus. Additionally, an undescribed species from the ''P. damii''–''loisellei'' species group is known from the Ankofia River basin in northwestern Madagascar.〔 * ''Paretroplus dambabe'' Sparks, 2002 * ''Paretroplus damii'' Bleeker, 1868 * ''Paretroplus gymnopreopercularis'' Sparks, 2008 * ''Paretroplus kieneri'' Arnoult, 1960 * ''Paretroplus lamenabe'' Sparks, 2008 (Big red cichlid) * ''Paretroplus loisellei'' Sparks & Schelly, 2011 * ''Paretroplus maculatus'' Kiener & Maugé, 1966 * ''Paretroplus maromandia'' Sparks & Reinthal, 1999 * ''Paretroplus menarambo'' Allgayer, 1996 * ''Paretroplus nourissati'' (Allgayer, 1998) * ''Paretroplus petiti'' Pellegrin, 1929 * ''Paretroplus polyactis'' Bleeker, 1878 * ''Paretroplus tsimoly'' Stiassny, Chakrabarty & Loiselle, 2001 The genus can be divided into several clades, and one of these includes ''P. lamenabe'', ''P. nourissati'' and ''P. tsimoly'', which have been considered worthy of placement in their own genus ''Lamena'' (still used in their common names).〔 On a higher level these three are part of a clade that also includes ''P. damii'' and ''P. loisellei''.〔〔 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「Paretroplus」の詳細全文を読む スポンサード リンク
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