rattail fish vs rattail

rattail fish and rattail both are nouns.

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

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

rattail fish and rattail: deep-sea fish with a large head and body and long tapering tail

Other synonyms of rattail fish include grenadier.

rattail fish (noun)	rattail (noun)
deep-sea fish with a large head and body and long tapering tail	deep-sea fish with a large head and body and long tapering tail