Australian arowana vs Dawson River salmon

Australian arowana and Dawson River salmon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian arowana	Yes	No	No	No
Dawson River salmon	Yes	No	No	No

As nouns, Australian arowana and Dawson River salmon are synonyms defined as:

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

Other synonyms of Australian arowana include saratoga, Scleropages leichardti, spotted barramundi, spotted bonytongue.

Australian arowana (noun)	Dawson River salmon (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)