The Collaborative International Dictionary of English v.0.48:
percoidean \per*coid"e*an\ (p[~e]r*koi"d[-e]*an), n. Any of numerous spiny-finned fishes of the order Perciformes. Syn: percoid fish, percoid. [WordNet 1.5]WordNet (r) 3.0 (2006):
percoidean n 1: any of numerous spiny-finned fishes of the order Perciformes [syn: percoid fish, percoid, percoidean]