genus Hypentelium vs fish genus

genus Hypentelium and fish genus both are nouns.

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

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

genus Hypentelium: a genus of fish in the family Catostomidae, containing 3 species of sucker (Hypentelium)
fish genus: any of various genus of fish

genus Hypentelium (noun)	fish genus (noun)
a genus of fish in the family Catostomidae, containing 3 species of sucker (Hypentelium)	any of various genus of fish