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ray-finned fish

[ rey-find ]
/ ˈreɪˌfɪnd /
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noun

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

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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Scientific definitions for ray-finned fish

ray-finned fish

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. Also called actinopterygian Compare lobe-finned fish.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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