white perch vs serranid

white perch and serranid both are nouns.

Word	Noun	Adjective	Verb	Adverb
white perch	Yes	No	No	No
serranid	Yes	No	No	No

As nouns, serranid is a hypernym of white perch; that is, serranid is a word with a broader meaning than white perch:

white perch: small silvery food and game fish of eastern United States streams
serranid: marine food sport fishes mainly of warm coastal waters

Other hypernyms of white perch include serranid fish.

white perch (noun)	serranid (noun)
small silvery food and game fish of eastern United States streams	marine food sport fishes mainly of warm coastal waters