family Toxotidae vs fish family

family Toxotidae and fish family both are nouns.

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

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

family Toxotidae (noun)	fish family (noun)
archerfishes	any of various families of fish