sciaenid vs sciaenid fish

sciaenid and sciaenid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
sciaenid	Yes	No	No	No
sciaenid fish	Yes	No	No	No

As nouns, sciaenid and sciaenid fish are synonyms defined as:

sciaenid and sciaenid fish: widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound

sciaenid (noun)	sciaenid fish (noun)
widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound	widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound