genus Cyclopterus vs fish genus

genus Cyclopterus and fish genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Cyclopterus	Yes	No	No	No
fish genus	Yes	No	No	No

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

genus Cyclopterus (noun)	fish genus (noun)
type genus of the Cyclopteridae: lumpfishes	any of various genus of fish