soapfish vs serranid fish

soapfish and serranid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
soapfish	Yes	No	No	No
serranid fish	Yes	No	No	No

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

soapfish: fishes with slimy mucus-covered skin; found in the warm Atlantic coastal waters of America
serranid fish: marine food sport fishes mainly of warm coastal waters

Other hypernyms of soapfish include serranid.

soapfish (noun)	serranid fish (noun)
fishes with slimy mucus-covered skin; found in the warm Atlantic coastal waters of America	marine food sport fishes mainly of warm coastal waters