centrarchid vs percoid fish

centrarchid and percoid fish both are nouns.

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

As nouns, percoid fish is a hypernym of centrarchid; that is, percoid fish is a word with a broader meaning than centrarchid:

centrarchid: small carnivorous freshwater percoid fishes of North America usually having a laterally compressed body and metallic luster: crappies, black bass, bluegills, pumpkinseed
percoid fish: any of numerous spiny-finned fishes of the order Perciformes

Other hypernyms of centrarchid include percoid, percoidean.

centrarchid (noun)	percoid fish (noun)
small carnivorous freshwater percoid fishes of North America usually having a laterally compressed body and metallic luster: crappies, black bass, bluegills, pumpkinseed	any of numerous spiny-finned fishes of the order Perciformes