percoid vs percoid fish

percoid and percoid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
percoid	Yes	No	No	No
percoid fish	Yes	No	No	No

As nouns, percoid and percoid fish are synonyms defined as:

percoid and percoid fish: any of numerous spiny-finned fishes of the order Perciformes

Other synonyms of percoid include percoidean.

percoid (noun)	percoid fish (noun)
any of numerous spiny-finned fishes of the order Perciformes	any of numerous spiny-finned fishes of the order Perciformes