pelvic fin   (TTS Sound)

The pelvic_fin has 1 Senses.

• pelvic fin, ventral fin
• 腹鰭
• 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
• 移動する際に方向制御を助ける魚の腰帯に付いている一対の鰭の片方