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:''For the United States Navy submarine, see USS Lancetfish (SS-296)'' | image = Alepisaurus ferox on deck.jpg | image_width = 240px | image_caption = Longnose lancetfish, ''Alepisaurus ferox'' | regnum = Animalia | phylum = Chordata | classis = Actinopterygii | ordo = Aulopiformes | familia = Alepisauridae | familia_authority = Swainson, 1839 | genus = ''Alepisaurus'' | genus_authority = R. T. Lowe, 1833 | subdivision_ranks = Species | subdivision = }} Lancetfishes are large oceanic predatory fishes in the genus ''Alepisaurus'' ("scaleless lizard"), the only living genus in the family Alepisauridae. Lancetfishes grow up to in length. Very little is known about their biology, though they are widely distributed in all oceans, except the polar seas. Specimens have been recorded as far north as Greenland. They are often caught as bycatch for vessels long-lining for tuna. The generic name is from Greek ''a-'' meaning "without", ''lepis'' meaning "scale", and ''sauros'' meaning "lizard". ==Species== The two currently recognized extant species in this genus are: * ''Alepisaurus brevirostris'' Gibbs, 1960 (short-snouted lancetfish) * ''Alepisaurus ferox'' R. T. Lowe, 1833 (long-snouted lancetfish) The main difference between the two is the shape of the snout, which is long and pointed in ''A. ferox'', and slightly shorter in ''A. brevirostris''. There is a third recognized species, ''A. paronai'' D'Erasmo, 1923,〔Uyeno, Teruya. "A Miocene alepisauroid fish of a new family, Polymerichthyidae, from Japan." Bull. Nat. Sci. Mus 10 (1967): 383-394.〕 which is a fossil known from Middle Miocene-aged strata from Italy. 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「lancetfish」の詳細全文を読む スポンサード リンク
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