pelvic fin

pelvic fin

n.

Either of a pair of lateral hind fins of fishes, attached to the pelvic girdle and corresponding to the hind limbs of higher vertebrates.

Thesaurus

Noun

1.

pelvic fin - 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 ventral fin fin - organ of locomotion and balance in fishes and some other aquatic animals