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Lightfishes are small stomiiform fishes in the family Phosichthyidae They are very small fishes found in oceans throughout the world: most species grow no longer than 10 cm, while those in the genus ''Vinciguerria'' only reach 4 cm or so. They make up for their small size with abundant numbers: ''Vinciguerria'' is thought — with the possible exception of ''Cyclothone'' — to be the most abundant genus of vertebrates. Deep-sea trawls of the Humboldt Current in the southeast Pacific have found that lightfishes make up 85% by mass of mesopelagic fishes, with ''Vinciguerria lucetia'' by far the most numerous species.〔(【引用サイトリンク】 author = R. Cornejo, R. Koppelmann & T. Sutton )〕 They are bioluminescent fishes, possessing rows of photophores along their sides, with which they hunt planktonic invertebrates, especially krill. ==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「Phosichthyidae」の詳細全文を読む スポンサード リンク
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