Dawson River salmon vs spotted barramundi

Dawson River salmon and spotted barramundi both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dawson River salmon	Yes	No	No	No
spotted barramundi	Yes	No	No	No

As nouns, Dawson River salmon and spotted barramundi are synonyms defined as:

Dawson River salmon and spotted barramundi: a species of large fish found in Australian rivers, it has a red or pink spot on every scale (Scleropages leichardti)

Other synonyms of Dawson River salmon include Australian arowana, saratoga, Scleropages leichardti, spotted bonytongue.

Dawson River salmon (noun)	spotted barramundi (noun)
a species of large fish found in Australian rivers, it has a red or pink spot on every scale (Scleropages leichardti)	a species of large fish found in Australian rivers, it has a red or pink spot on every scale (Scleropages leichardti)