jackknife-fish vs Equetus lanceolatus

jackknife-fish and Equetus lanceolatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
jackknife-fish	Yes	No	No	No
Equetus lanceolatus	Yes	No	No	No

As nouns, jackknife-fish and Equetus lanceolatus are synonyms defined as:

jackknife-fish and Equetus lanceolatus: black-and-white drumfish with an erect elongated dorsal fin

jackknife-fish (noun)	Equetus lanceolatus (noun)
black-and-white drumfish with an erect elongated dorsal fin	black-and-white drumfish with an erect elongated dorsal fin