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The western longnose spurdog, '' Squalus nasutus'', is a dogfish of the family Squalidae, found on the continental shelf off the northwest and southwest coasts of Western Australia, at depths of between 300 and 510 m. Its length is at least 55 cm. The western longnose is a rare, small and slender dogfish with a narrow head and long narrow snout. There is a short medial barbel on the anterior nasal flaps. The pectoral fin has a shallowly concave posterior margin. The first dorsal fin is moderately high with a short spine.〔Compagno, Dando, & Fowler, ''Sharks of the World'', Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2〕 Coloration is light grey above, paler below, with no white spots. The pale dorsal fins have dusky tips and posterior margins. There is a dark blotch on part of the caudal fin's posterior margin.〔 Its reproduction is ovoviviparous. ==See also== * List of sharks 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「Western longnose spurdog」の詳細全文を読む スポンサード リンク
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