harvestfish vs stromateid

harvestfish and stromateid both are nouns.

Word	Noun	Adjective	Verb	Adverb
harvestfish	Yes	No	No	No
stromateid	Yes	No	No	No

As nouns, stromateid is a hypernym of harvestfish; that is, stromateid is a word with a broader meaning than harvestfish:

harvestfish: butterfish up to a foot long of Atlantic waters from Chesapeake Bay to Argentina
stromateid: small marine fish with a short compressed body and feeble spines

Other hypernyms of harvestfish include butterfish, stromateid fish.

harvestfish (noun)	stromateid (noun)
butterfish up to a foot long of Atlantic waters from Chesapeake Bay to Argentina	small marine fish with a short compressed body and feeble spines