family Clupeidae vs fish family

family Clupeidae and fish family both are nouns.

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

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

family Clupeidae (noun)	fish family (noun)
herrings, shad, sardines, etc.	any of various families of fish