ray-finned fish
Americannoun
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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.
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Also called actinopterygian
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Compare lobe-finned fish
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
However, the Aqp10.2 found in ray-finned fish may have reduced or lost urea and boric acid permeability during evolution.
From Science Daily • Dec. 21, 2023
Today’s oceans are mostly populated with species from another group that originated about 420 million years ago: the ray-finned fish, so named because their fins are supported by slender spines.
From Science Magazine • Feb. 10, 2021
That’s just a snapshot of the astonishing diversity found in the group of fishes called teleosts, or ray-finned fish, which today have 30,000 species—more than all living mammals, birds, reptiles, and amphibians combined.
From Science Magazine • Sep. 26, 2016
Food Safety and Inspection Service released its final rule Wednesday on a new inspection process for catfish and other ray-finned fish species that's scheduled to start in March.
From US News • Nov. 25, 2015
"They are missing some critical animals - it would be interesting to see what addition of salamander or more ray-finned fish would do to their analysis, but it might not change anything important."
From BBC • Apr. 17, 2013
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
