striped killifish vs killifish

striped killifish and killifish both are nouns.

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

As nouns, killifish is a hypernym of striped killifish; that is, killifish is a word with a broader meaning than striped killifish:

striped killifish: black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States
killifish: small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control

striped killifish (noun)	killifish (noun)
black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States	small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control