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Obscure snakehead
The obscure snakehead, ''Parachanna obscura'', is a medium-sized carnivorous fish that has an elongated shape tapered on both ends and is covered in medium circular scales (cycloid).〔 The head, resembling a snake, is long and depressed anteriorly and covered with cycloid scales slightly larger than those scales on the body.〔 This species is found in central Africa along the western coastline from as far north as Senegal to as far south as Zaire and into central Africa into southwest Sudan.
== Genera ==
Four identified ''Parachanna'' species originate within the continent of Africa. They include ''P. fayumensis'' (fossil), ''P. africana'', ''P. insignis'', and the most common, ''P. obscura''. 〔Kpogue, D. N. S., Mensah, G. A., & Fiogbe, E. D. (2013). A review of biology, ecology and prospect for aquaculture of parachanna obscura. Reviews in Fish Biology and Fisheries, 23(1), 41–50. doi:http://dx.doi.org/10.1007/s11160-012-9281-7〕〔Murray, Alison M. (2012): Relationships and biogeography of the fossil and living African snakehead fishes (Percomorpha, Channidae, Parachanna), Journal of Vertebrate Paleontology, 32:4, 820–835.〕 ''P. africana'' is restricted to Benin, Nigeria, and into Gabon, ''P. insignis'' is found throughout the Congo River basin in Congo and into Gabon, and ''P. obscura'' is the most widespread of the African species, being found in the Lake Chad basin, and the Nile, Zaire, Cross, Niger, and
Senegal River basins.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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