adipose fin

Noun

 * 1)  A soft, fleshy fin located behind the dorsal fin and just forward of the caudal fin, found fish of certain families, believed to have some sensory function.

Translations

 * Finnish:
 * Galician:
 * Japanese: 脂鰭
 * Russian: жирово́й плавни́к
 * Spanish: aleta adiposa
 * Turkish: