Think this is really a point to worry about Sagefisher.
Despite the fact that most professional net-fishings have been bought by the NorthAtlantic Salmonfund in both Norway and Scotland the amount of spawning fish has become less over the last decade.
It's not only the sea-lice that do all the harm; because seals make holes in the farming-nets, and there are many so called escapees.
Unfortunately these fish seem to be able to find rivers and spawning grounds, thus mixing with the wild salmon.
This causes a breed that is less capable of fighting the dangers they are about to encounter during life at sea.
So most will not be able to return after a few years to produce new offspring.
It's really something to worry about...
Hans