Dactylopterus vs fish genus

Dactylopterus and fish genus both are nouns.

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

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

Dactylopterus (noun)	fish genus (noun)
a genus of Dactylopteridae	any of various genus of fish