serranid vs white perch

serranid and white perch both are nouns.

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

As nouns, white perch is a hyponym of serranid; that is, white perch is a word with a more specific, narrower meaning than serranid:

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

Other hyponyms of serranid include Morone americana, silver perch, Morone interrupta, yellow bass, sea bass, soapfish.

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