mojarra vs percoid fish

mojarra and percoid fish both are nouns.

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

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

mojarra: small silvery schooling fishes with protrusible mouths found in warm coastal waters
percoid fish: any of numerous spiny-finned fishes of the order Perciformes

Other hypernyms of mojarra include percoid, percoidean.

mojarra (noun)	percoid fish (noun)
small silvery schooling fishes with protrusible mouths found in warm coastal waters	any of numerous spiny-finned fishes of the order Perciformes