sea bass vs food fish

sea bass and food fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea bass	Yes	No	No	No
food fish	Yes	No	No	No

As nouns, food fish is a hypernym of sea bass; that is, food fish is a word with a broader meaning than sea bass:

sea bass: any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin
food fish: any fish used for food by human beings

Other hypernyms of sea bass include serranid, serranid fish.

sea bass (noun)	food fish (noun)
any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin	any fish used for food by human beings
the lean flesh of a saltwater fish of the family Serranidae