herring vs clupeid fish

herring and clupeid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
herring	Yes	No	No	No
clupeid fish	Yes	No	No	No

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

herring: commercially important food fish of northern waters of both Atlantic and Pacific
clupeid fish: any of numerous soft-finned schooling food fishes of shallow waters of northern seas

Other hypernyms of herring include food fish, clupeid.

herring (noun)	clupeid fish (noun)
commercially important food fish of northern waters of both Atlantic and Pacific	any of numerous soft-finned schooling food fishes of shallow waters of northern seas
valuable flesh of fatty fish from shallow waters of northern Atlantic or Pacific; usually salted or pickled