Scophthalmus vs fish genus

Scophthalmus and fish genus both are nouns.

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

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

Scophthalmus: a genus of Bothidae, containing some of the turbots (Scophthalmus)
fish genus: any of various genus of fish

Scophthalmus (noun)	fish genus (noun)
a genus of Bothidae, containing some of the turbots (Scophthalmus)	any of various genus of fish