cichlid fish vs cichlid

cichlid fish and cichlid both are nouns.

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

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

cichlid fish and cichlid: freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums

cichlid fish (noun)	cichlid (noun)
freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums	freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums