On page 25 of today's Scottish Daily Mail is a piece quoting Professor of aquatic biology at Swansea university, Carlos Garcia de Leaniz.

It warns of extinction of Scottish salmon unless there is a complete ban on fishing for them, including catch and release.
He likens fishing for salmon with hunting tigers, cheetahs and black rhino.

Quote:- "Catch and release is just like shooting black rhinos with darts, and only for fun. Would you do it?"

There is no mention of catches by netting or salmon farms, only angling.2