ray-finned fish

[ rey-find ]

noun

1. any of various bony fishes of the subclass Actinopterygii, having strong slender rays, excluding the coelacanth and lungfish.

ray-finned fish

1. Any of various bony fishes belonging to the subclass Actinopterygii, having fins supported by thin bony rays. Ray-finned fish evolved in the early Devonian Period and include most species of fish today.
2. Also called actinopterygian
3. Compare lobe-finned fish