remora vs sucking fish

remora and sucking fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
remora	Yes	No	No	No
sucking fish	Yes	No	No	No

As nouns, remora and sucking fish are synonyms defined as:

remora and sucking fish: marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects

Other synonyms of remora include suckerfish.

remora (noun)	sucking fish (noun)
marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects	marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects