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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク African arowana ： ウィキペディア英語版 African arowana The African arowana, ''Heterotis niloticus'', is a species of bonytongue. Despite being called an "arowana", the African arowana is more closely related to arapaimas, the only other members in the Arapaimidae family, than the South American, Asian and Australian arowanas in the Osteoglossidae family (Arapaimidae is sometimes included in Osteoglossidae). Compared to these, the African arowana has a more terminal mouth and is the only one that feeds extensively on plankton. ==Description== The African arowana is a long-bodied fish with large scales, long dorsal and anal fins set far back on the body, and a rounded caudal fin. Its height is 3.5 to 5 times standard length (SL). It has been reported to reach up to SL and weigh up to .〔 This fish is gray, brown, or bronze in color. Coloration is uniform in adults, but juveniles often have dark longitudinal bands. African arowanas have air-breathing organs on its branchiae, enabling them to survive in oxygen-depleted water. A suprabranchial organ allows it to concentrate small planktonic food particles and also has a sensory function. 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「African arowana」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.