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Allosmerus elongatus
The only member of its genus, ''Allosmerus elongatus'', the whitebait smelt, is an uncommon marine species of smelt, about which little is known.〔 Originally described as both ''Osmerus attenuatus'' and ''O. elongatus'', these two species were determined to be conspecific in 1946.〔 The fish can grow from 7–9 inches in length, has large eyes, a greenish-gray color on its back, and a silver band along its sides. Unlike most other smelt species which generally have no enlarged teeth in the roof of their mouth, the whitebait has single large tooth in the center of its vomer, which is sometimes flanked by a smaller tooth on either side. The adult males of the species have a longer anal fin.〔
Their range extends from Vancouver Island to San Francisco, California, although one fish has been found as far south as San Pedro, California,〔 a specimen which may have been released as live bait. Often abundant in bay areas, whitebait are known to spawn on subtidal sandbanks and swim in schools.〔 The fish has fairly minor economic importance; it serves as food for larger fish, and is netted by some fishermen during the spring and summer to be used as bait.〔〔
==References==
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「Allosmerus elongatus」の詳細全文を読む
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