Slickhead - Slickhead (English spelling)

Japanese: セキトリイワシ - せきとりいわし(英語表記)slickhead
Slickhead - Slickhead (English spelling)

A deep-sea fish of the Alepocephalidae family of the order Argentiformes in the class Osteichthyes. Its body is black and slender, reaching a length of about 30 cm. It is widely distributed in the eastern Indian Ocean and the western Pacific Ocean, including Sagami Bay, Suruga Bay, Tosa Bay, the Okinawa Trough, southern Taiwan, and the Philippines. It lives in deep-sea areas of 310 to 1,440 meters, and is rarely caught with bottom trawls. Its skin is thick and has no scales except on the lateral line. Its dorsal and anal fins are located at the rear of its body, and it has no adipose fin. Its body is dark purple, and tiny light-emitting organs are scattered throughout. There are more than 30 species of Alepocephalidae that live in the deep seas around the world. Of these, about 20 species have been identified in Japan from the deep seas on the Pacific coast. It has almost no value as food.

[Akira Ochiai and Kunio Amano]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

硬骨魚綱ニギス目セキトリイワシ科Alepocephalidaeの深海魚。体は黒くて細長く、30センチメートル余りになる。相模(さがみ)湾、駿河(するが)湾、土佐(とさ)湾、沖縄舟状海盆(しゅうじょうかいぼん)、台湾南部、フィリピンなど、東インド洋・西太平洋に広く分布する。310~1440メートルの深海域に生息し、底引網でまれにとれる。皮膚は厚く、側線上を除くと鱗(うろこ)がない。背びれと臀(しり)びれは体の後方にあり、脂(あぶら)びれがない。体は暗紫色で、微細な発光器が各部に点在する。セキトリイワシ科は世界各地の深海にすみ30種余りがいる。そのうち、日本には太平洋側の深海から20種ほどが確認されている。食用としての価値はほとんどない。

[落合 明・尼岡邦夫]

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