characin fish vs caribe

characin fish and caribe both are nouns.

Word	Noun	Adjective	Verb	Adverb
characin fish	Yes	No	No	No
caribe	Yes	No	No	No

As nouns, caribe is a hyponym of characin fish; that is, caribe is a word with a more specific, narrower meaning than characin fish:

characin fish: any freshwater fish of the family Characinidae
caribe: small voraciously carnivorous freshwater fishes of South America that attack and destroy living animals

Other hyponyms of characin fish include tetra, cardinal tetra, Paracheirodon axelrodi, pirana, piranha.

characin fish (noun)	caribe (noun)
any freshwater fish of the family Characinidae	small voraciously carnivorous freshwater fishes of South America that attack and destroy living animals