Lepidocybium vs fish genus

Lepidocybium and fish genus both are nouns.

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

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

Lepidocybium (noun)	fish genus (noun)
a genus of Gempylidae	any of various genus of fish