genus Triaenodon vs fish genus

genus Triaenodon and fish genus both are nouns.

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

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

genus Triaenodon (noun)	fish genus (noun)
a genus of Triakidae	any of various genus of fish