Ittoudai - Ittoudai (English spelling) spiny squirrelfish

Japanese: イットウダイ - いっとうだい(英語表記)spiny squirrelfish
Ittoudai - Ittoudai (English spelling) spiny squirrelfish

A marine fish belonging to the family Scyphotidae in the order Alfonsinophyllum of the class Osteichthyes. It is also called Kanokouo. It is found along the Pacific coast south of Sagami Bay, the Ogasawara Islands, the Goto Islands, Jeju Island (Korea), the South China Sea, and the Hawaiian Islands. Its body length is 25 cm. Its body is laterally compressed and shaped like a sea bream, and is covered with hard, rough scales. It belongs to the subfamily Scyphotinae and is distinguished from the subfamily Acanthinae by the presence of one strong, long spine at the bottom of the preopercular bone and by the fact that its anal fin has less than 10 soft rays. It is different from other species in that it has the most spines on its head. Its body is a beautiful red color, with white dots on each scale, and 9 to 10 longitudinal stripes on its side. The pattern resembles a Kanoko dyed pattern, which is where the nickname comes from. It inhabits coastal reefs and coral reefs. It is nocturnal, hiding in the shade or in rocky holes during the day and coming out at night to feed. It does not form large schools, and is caught with masu nets set up between reefs. It is often kept in aquariums as an ornamental fish, but it is also edible and quite tasty.

[Tsuru Okamura and Kunio Amioka November 17, 2015]

Squirrelfish (ecology)
They live on coastal reefs, hiding in the shade or in rocky caves during the day and coming out at night to feed. The vertical stripes created by their scales with white spots stand out. © Underwater Fort Enterprise, Isamu Soyama ">

Squirrelfish (ecology)


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

硬骨魚綱キンメダイ目イットウダイ科に属する海水魚。カノコウオともよばれる。相模湾(さがみわん)以南の太平洋沿岸、小笠原諸島(おがさわらしょとう)、五島列島(ごとうれっとう)、済州島(さいしゅうとう)(韓国)、南シナ海、ハワイ諸島に分布する。体長は25センチメートル。体は側扁(そくへん)したタイ形で、硬くて粗雑な鱗(うろこ)で覆われる。前鰓蓋骨(ぜんさいがいこつ)の下端に1本の強くて長い棘(とげ)があること、臀(しり)びれは10軟条以下であることなどでイットウダイ亜科に属し、アカマツカサ亜科と区別する。頭部にある棘がもっとも多いことで他種と異なる。体色は美しい赤色で、各鱗に白色点があり、体側に9~10本の縦走帯を形成する。この模様を鹿の子(かのこ)絞りに見立てたのが、別名の由来である。沿岸の岩礁やサンゴ礁域に生息する。夜行性で、日中は物陰や岩穴に潜み、夜間に出て摂食する。あまり大きな群れをつくることはなく、岩礁と岩礁の間に設置する枡(ます)網などで漁獲される。観賞用として水族館で飼育されることが多いが、食用にもなり、かなり美味である。

[岡村 收・尼岡邦夫 2015年11月17日]

イットウダイ(生態)
沿岸の岩礁などに生息し、日中は物陰や岩穴に潜み、夜間に出て摂食する。白点のある鱗がつくる縦縞が映える©水中フォート・エンタープライズ 楚山いさむ">

イットウダイ(生態)


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