fin ray

Japanese: fin ray(英語表記)finray
fin ray

…the structure of the fins of cartilaginous fishes is slightly different from that of bony fishes. In cartilaginous fishes, the surface of the fin is covered with skin, the inside is lined with keratinous fin rays, and the base is supported by cartilage. In bony fishes, the fins are made up of fin rays and a membrane that connects them, and the base is supported by a pinniped bone.

*Some of the terminology that mentions "fin ray" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ひれの構造は軟骨魚類と硬骨魚類とではやや異なる。軟骨魚類ではひれの表面は皮膚に覆われ,内部には角質の細長い鰭条fin ray(ひれすじともいう)が並び,基部は軟骨によって支えられる。硬骨魚類ではひれは細長い鰭条とこれらをつなぐ鰭膜とからなり,基部は担鰭骨によって支えられる。…

※「fin ray」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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