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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 Bidyanus bidyanus ： ウィキペディア英語版 Bidyanus bidyanus Silver perch (''Bidyanus bidyanus'')〔Allen, Midgley & Allen. ''Field Guide to the Freshwater Fishes Of Australia''. Museum of Western Australia & CSIRO Publishing. 2002. ISBN 0-7307-5486-3〕 are a medium-sized freshwater fish endemic to the Murray-Darling river system in south-eastern Australia. Their scientific name comes from an aboriginal name for the species — ''Bidyan'' — recorded by Major Mitchell on the Barwon River on his 1832 expedition. (Mitchell's original scientific name for the species was ''Cernua Bidyana''.) Silver perch are not a "true" perch of the ''Perca'' genus, but are instead a member of Terapontidae or 'grunter' family. They are the largest member of the Terapontidae family, capable of growing in excess of 60 cm and close to 8 kg, but today wild river specimens are typically 30–40 cm and 1.0–1.5 kg. The silver perch is the only major representative of the Terapontidae family in the southern Murray-Darling system, compared to northern tropical systems where terapontid species are common. Another small terapontid, the spangled perch (''Leiopotherapon unicolor''), does occur sporadically in the northern Murray-Darling Basin. ==Description== The silver perch is a large grunter with a small head, small eyes, a small mouth at the end of a pointed 'beak-like' snout.〔Dianne J. Bray & Vanessa J. Thompson, 2011, (Silver Perch, Bidyanus bidyanus ). Fishes of Australia. Retrieved 29 Aug 2014.〕 The species is streamlined and laterally compressed, with a spiny dorsal fin of medium height, angular soft dorsal and anal fins and a forked tail. Large specimens become very deep bodied with a large hump behind the head. Body dark grey to silvery greyish-brown above and silvery on sides, with darker scale margins giving a reticulated pattern; belly whitish; dorsal and caudal fins dark, pelvic fins white. Juveniles mottled with darker vertical bars. 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「Bidyanus bidyanus」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.