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''Sternoptyx'' is an oceanic ray-finned fish genus which belongs in the family Sternoptychidae. This is the type genus of the Sternoptychidae, as well as the marine hatchetfish subfamily Sternoptychinae. ''Sternoptyx'' have silvery, high, and laterally compressed bodies and large, non-telescopic eyes. They are all relatively small, with even the largest species (''S. pseudobscura'' and ''S. pseudodiaphana'') not exceeding standard length.〔 ==Species== There are currently four recognized species in this genus: * ''Sternoptyx diaphana'' Hermann, 1781 (Diaphanous Hatchetfish) * ''Sternoptyx obscura'' Garman, 1899 * ''Sternoptyx pseudobscura'' R. C. Baird, 1971 (Highlight Hatchetfish) * ''Sternoptyx pseudodiaphana'' Borodulina, 1977 (False Oblique Hatchetfish) Fossils of this genus show that they have existed at least since the Early Oligocene, about 30 million years ago.〔 (2002): (). ''In:'' A compendium of fossil marine animal genera. ''Bulletin of American Paleontology'' 364: 560. (HTML database excerpt )〕 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「Sternoptyx」の詳細全文を読む スポンサード リンク
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