rainbow fish vs Lebistes reticulatus

rainbow fish and Lebistes reticulatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
rainbow fish	Yes	No	No	No
Lebistes reticulatus	Yes	No	No	No

As nouns, rainbow fish and Lebistes reticulatus are synonyms defined as:

rainbow fish and Lebistes reticulatus: small freshwater fish of South America and the West Indies; often kept in aquariums

Other synonyms of rainbow fish include guppy.

rainbow fish (noun)	Lebistes reticulatus (noun)
small freshwater fish of South America and the West Indies; often kept in aquariums	small freshwater fish of South America and the West Indies; often kept in aquariums