Swimming salmon mate — oddly, this is the result (5)

'the result' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see a link between them that I can't see?

'swimming salmon mate oddly' is the wordplay.
'swimming' indicates anagramming the letters (letters swim around into a new order).
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'salmon'+'mate'='salmonmate'
The alternating letters of 'salmonmate' are 'slomt'.
'slomt' anagrammed gives 'SMOLT'.

'this is' acts as a link.

Can you help me to learn more?