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''Symphysodon'', colloquially known as discus, is a genus of cichlids native to the Amazon river basin. Due to their distinctive shape and bright colors, discus are popular as freshwater aquarium fish, and their aquaculture in several countries in Asia is a major industry.〔Sands D (1994) ''A fishkeepers guide to Central American cichlids.'' Tetra Press. Belgium pg 59-60.〕〔Mills D (1993) ''Aquarium Fish'' Harper Collins ISBN 0-7322-5012-9〕 They are sometimes referred to as pompadour fish.〔Discus fish - Page 5 Thomas A. Giovanetti, Matthew M. Vriends - 1991 "It was not until the 1930s and 1940s that aquarium-fish dealers began importing discus into Europe and the United States under the common name "pompadour fish." Discus are cichlids, which often surprises many aquarists."〕〔International Wildlife Encyclopedia Set - Page 2006 Robert Burton, Maurice Burton, 2002 "Popular aquarium fish because of their bright colors and attractive patterns, pompadour fish are actually quite difficult to keep and require frequent water changes. Pictured are a group of red discus, one of the two species of pompadour fish."〕 == Species == There are currently three recognized species in this genus: * ''Symphysodon aequifasciatus'' Pellegrin, 1904 (Blue discus) * ''Symphysodon discus'' Heckel, 1840 (Red discus or Heckel discus) * ''Symphysodon tarzoo'' E. Lyons, 1959 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「Discus (fish)」の詳細全文を読む スポンサード リンク
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