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The daggertooths (genus ''Anotopterus'') are a genus of aulopiform fish, the sole genus of the family Anotopteridae. They are found in oceans worldwide, but prefer cooler waters. Daggertooths are similar to the related lancetfishes in appearance, with a large mouth and dagger-like teeth. However, as their scientific name (meaning "without fins on its back") suggests, they lack the large dorsal fins of the lancetfishes. They grow to as long as . ==Species== The currently recognized species in this genus are: * ''Anotopterus nikparini'', Kukuev, 1998 (North Pacific daggertooth) * ''Anotopterus pharao'', Zugmayer, 1911 (daggertooth) * ''Anotopterus vorax'', Regan, 1913 (south ocean daggertooth) A possible fourth species was discovered in 2008, but has yet to receive a taxonomic name.〔Stewart, Andrew. "Science report: Denizens of the deep: daggertooth and stareater." (IPY-CAML Voyage 2008 ). Ministry of Fisheries. Crown Copyright: 2008.〕 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「Anotopterus」の詳細全文を読む スポンサード リンク
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