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rainbow shark
The rainbow shark (''Epalzeorhynchos frenatum'') is a species of Southeast Asian freshwater fish from the Cyprinidae family. It is also variously known as the ruby shark, red-fin shark, red-finned shark, rainbow sharkminnow, green fringelip labeo, whitefin shark and whitetail sharkminnow.〔(Red-fin Shark, Rainbow Shark, Ruby Shark (''Epalzeorhynchus frenatus''), Mongabay.com, 2006 ), retrieved on August 17, 2007〕〔(Rainbow Shark (''Epalzeorhynchos frenatum''), AquariumLife.net (undated) ), retrieved on August 17, 2007〕 It is a popular, semi-aggressive aquarium fish. Unlike true sharks, which belong to the Chondrichthyes ("cartilagenous fishes") lineage, the rainbow shark is an actinopterygiian ("ray-finned fish").
==Distribution and habitat==
Rainbow sharks are native to the basins of Mekong, Chao Phraya, Xe Bangfai and Maeklong in Indochina.〔 They live in water with sandy substrates, near the river bottom. This species feeds on algae and plankton, and seasonally migrates into flooded areas, then recedes back to the rivers as the floods dry up. 〔
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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