noun
adipose fin
A small, fleshy fin without fin rays, located on the back between the dorsal fin and the tail, found in some fish such as salmonids and catfish. Technical ichthyological term.
サケ科の魚には背びれの後ろに脂鰭がある。
Salmonids have an adipose fin behind the dorsal fin.
脂鰭を切り取って標識にする調査が行われている。
Research is conducted in which the adipose fin is clipped as a mark.
Dorsal fin; located on the back, while the adipose fin is a smaller, fleshy fin behind it.
Caudal (tail) fin; the adipose fin is a separate small fin in front of the tail.
Compound of 脂 (abura, 'fat') and 鰭 (hire, 'fin'), referring to the fin's fatty, fleshy texture.