genus Antigonia vs fish genus

genus Antigonia and fish genus both are nouns.

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

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

genus Antigonia: a genus of fish in the family Caproidae, commonly known as boarfishes (Antigonia)
fish genus: any of various genus of fish

genus Antigonia (noun)	fish genus (noun)
a genus of fish in the family Caproidae, commonly known as boarfishes (Antigonia)	any of various genus of fish