脂あぶら鰭びれ

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.

• サケ科かの魚さかなには背せびれの後うしろに脂あぶら鰭びれがある。

  Salmonids have an adipose fin behind the dorsal fin.

• 脂あぶら鰭びれを切きり取とって標ひょう識しきにする調ちょう査さが行おこなわれている。

  Research is conducted in which the adipose fin is clipped as a mark.