Ac·an·thop·ter·yg·i·an a. Zool. Belonging to the order of fishes having spinose fins, as the perch.  -- n. A spiny-finned fish.
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  acanthopterygian
       n : a teleost fish with fins that are supported by sharp
           inflexible rays [syn: spiny-finned fish] [ant: soft-finned
           fish]