Anarhichadidae vs fish family

Anarhichadidae and fish family both are nouns.

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

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

Anarhichadidae (noun)	fish family (noun)
wolffishes	any of various families of fish