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The silver spinyfin, ''Diretmus argenteus'', is a spinyfin of the genus ''Diretmus'', found around the world except the Mediterranean, at depths down to 2,000 m. It belongs to the monotypic genus ''Diretmus''. Their length is between 30 and 40 cm. The silver spinyfin is a widely distributed but rare species with a flattened disc-shaped body with a sharp scute-covered edge on the belly. A large upturned mouth and huge eye dominate the front half of the disc and a small forked tail projects from the other. They are oviparous and the larvae spend time in the plankton. It has small spiny scales but no lateral line and is a uniform silvery colour, the top of the back being black. ==References== * * * Tony Ayling & Geoffrey Cox, ''Collins Guide to the Sea Fishes of New Zealand'', (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8 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「Silver spinyfin」の詳細全文を読む スポンサード リンク
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