toadfish vs Opsanus tau

toadfish and Opsanus tau both are nouns.

Word	Noun	Adjective	Verb	Adverb
toadfish	Yes	No	No	No
Opsanus tau	Yes	No	No	No

As nouns, toadfish and Opsanus tau are synonyms defined as:

toadfish and Opsanus tau: bottom-dwelling fish having scaleless slimy skin and a broad thick head with a wide mouth

toadfish (noun)	Opsanus tau (noun)
bottom-dwelling fish having scaleless slimy skin and a broad thick head with a wide mouth	bottom-dwelling fish having scaleless slimy skin and a broad thick head with a wide mouth