striped killifish vs Fundulus majalis

striped killifish and Fundulus majalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
striped killifish	Yes	No	No	No
Fundulus majalis	Yes	No	No	No

As nouns, striped killifish and Fundulus majalis are synonyms defined as:

striped killifish and Fundulus majalis: black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States

Other synonyms of striped killifish include may fish, mayfish.

striped killifish (noun)	Fundulus majalis (noun)
black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States	black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States