Sciaena antarctica vs sciaenid

Sciaena antarctica and sciaenid both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sciaena antarctica	Yes	No	No	No
sciaenid	Yes	No	No	No

As nouns, sciaenid is a hypernym of Sciaena antarctica; that is, sciaenid is a word with a broader meaning than Sciaena antarctica:

Sciaena antarctica: large important food fish of Australia; almost indistinguishable from the maigre
sciaenid: widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound

Other hypernyms of Sciaena antarctica include sciaenid fish.

Sciaena antarctica (noun)	sciaenid (noun)
large important food fish of Australia; almost indistinguishable from the maigre	widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound