Perch sculpin

Japanese: アナハゼ - あなはぜ(英語表記)perch sculpin
Perch sculpin

A marine fish belonging to the order Perciformes and family Cotidae. It is found throughout Japan south of southern Hokkaido and in the southern part of the Korean Peninsula. Although it has the name "goby," it is actually a species of the family Cotidae. It has a flat skin flap above the eye, but no flap on the back of the head. It has a small preopercular spine. It has almost no scales on its body. There are no skin flaps on the lateral line. Its body color varies from blackish brown to yellowish brown, but it has no white spots on the ventral side. It lives in shallow sea seaweed beds and rocky areas. It is carnivorous and feeds on small crustaceans. Males have large reproductive projections. It grows to about 18 centimeters in length. The closely related species, the Asahiana goby, has white spots on the ventral side and small skin flaps on the lateral line. The Ayaana goby has a complex brown band running diagonally down its anal fin. In addition to these species, there are several other species of sand goby in Japan.

[Kunio Amano]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

硬骨魚綱スズキ目カジカ科に属する海水魚。北海道南部以南の日本各地、朝鮮半島南部に分布する。ハゼの名前がついているが、カジカ科の種類である。眼上部に平たい皮弁があるが、後頭部には皮弁がない。小さな前鰓蓋骨棘(ぜんさいがいこつきょく)がある。体に鱗(うろこ)がほとんどない。側線上に皮弁がない。体色は黒褐色、黄褐色など変化に富むが、腹側面に白色斑(はくしょくはん)がない。浅海の藻場や岩礁域にすむ。肉食性で小型甲殻類などを食べる。雄には大きな生殖突起がある。体長18センチメートルぐらいになる。近縁種のアサヒアナハゼには腹側面に白色斑があり、側線上に小皮弁がある。アヤアナハゼには臀(しり)びれに斜めに走る複雑な形の褐色帯がある。日本には、これらの種以外に数種以上のアナハゼ類がいる。

[尼岡邦夫]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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