ventral fin

英 美
  • n. [鱼]腹鳍
  • fin n.鳍;鱼翅;鳍状物;散热片;五元纸币
  • ventral adj.腹部的
Noun:
  1. either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate