tench vs cyprinid fish

tench and cyprinid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
tench	Yes	No	No	No
cyprinid fish	Yes	No	No	No

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

tench: freshwater dace-like game fish of Europe and western Asia noted for ability to survive outside water
cyprinid fish: soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales

Other hypernyms of tench include cyprinid.

tench (noun)	cyprinid fish (noun)
freshwater dace-like game fish of Europe and western Asia noted for ability to survive outside water	soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales