Carassius auratus vs cyprinid

Carassius auratus and cyprinid both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carassius auratus	Yes	No	No	No
cyprinid	Yes	Yes	No	No

As nouns, cyprinid is a hypernym of Carassius auratus; that is, cyprinid is a word with a broader meaning than Carassius auratus:

Carassius auratus: small golden or orange-red freshwater fishes of Eurasia used as pond or aquarium fishes
cyprinid: soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales

Other hypernyms of Carassius auratus include cyprinid fish.

Carassius auratus (noun)	cyprinid (noun)
small golden or orange-red freshwater fishes of Eurasia used as pond or aquarium fishes	soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales

Carassius auratus (adjective)	cyprinid (adjective)
	of or relating to members of fish family Cyprinidae