noun, plural (especially collectively) surgeonfish (especially referring to two or more kinds or species) surgeonfishes.
any tropical, coral-reef fish of the family Acanthuridae, with one or more sharp spines near the base of the tail fin.
noun (pl) -fish, -fishes
any tropical marine spiny-finned fish of the family Acanthuridae, having a compressed brightly coloured body with one or more knifelike spines at the base of the tail


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