NRW have replied to the FOI request by saying they did not make any such comment. 4/10/17

This a a quote taken directly from a letter produced by Angling Trust and Afonydd Cymru and sent to Lesley Griffiths A.M. Cabinet Secretary. We are awaiting a response to a freedom of information request for a copy of the document proffering this advice to the Welsh Government. We will keep you posted.

“Our recent meeting with your officials revealed nothing of substance nor any future plans or direction, save to learn that NRW had advised that climate change would bring a premature end to our migratory fisheries, thus making them not worthy of further attention”