mojarra vs percoid

mojarra and percoid both are nouns.

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

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

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

Other hypernyms of mojarra include percoid fish, percoidean.

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