family Sparidae vs fish family

family Sparidae and fish family both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Sparidae	Yes	No	No	No
fish family	Yes	No	No	No

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

family Sparidae (noun)	fish family (noun)
porgies; scups	any of various families of fish