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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 Northern sennet ： ウィキペディア英語版 Northern sennet The northern sennet, ''Sphyraena borealis'', is an ocean-going species of fish in the barracuda family, or Sphyraenidae. It was described by the American zoologist James Ellsworth De Kay in 1842. De Kay's description was part of several volumes he published regarding the fauna on New York from 1842-1849.〔(【引用サイトリンク】 work=Biographical Dictionary of Hypogean Fish Researchers ) 〕 Northern sennet are also known as northern barracuda.〔(【引用サイトリンク】 work=Fishbase )〕 ==Description== Like other members of the Sphyraenidae family, northern sennet have elongated bodies, pike-like heads, and large jaws.〔 * 〕 The lower jaw protrudes slightly from the upper jaw, both of which contain fang-like teeth.〔 They have two dorsal fins, which are widely separated on their backs. The anterior dorsal fin usually possesses spines, while the posterior only has rays.〔 Northern sennet have 24 vertebrae. They also have five or six spines on their dorsal fins and 9 rays. Their anal fins have only two spines and 7-9 rays. Northern sennet can grow to be up to 46 cm in length,〔Robins, C.R. and G.C. Ray 1986 A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p.〕 but they are generally considered the smallest of the barracudas - with many adults growing to less than 1 ft (0.3 m) in length,〔(【引用サイトリンク】title=GMA.org entry on Northern sennet )〕 and the greatest recorded weight being only 0.93 kg.〔(【引用サイトリンク】title=Suborder SCOMBROIDEI, SPHYRAENIDAE pdf )〕 Northern sennet are olive-colored, dorsally, and silvery-white ventrally. They also have several dusky blotches along their lateral lines.〔 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「Northern sennet」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.