I've 'fast forwarded' through it.
not very informative it has to be said and there is probably nothing new in the film.
The first hour is basically people moaning that salmon hatcheries are killing off the stocks of wild fish in the US, and they why didn't they just let the wild salmon ( and steelhead) do the stock recovery on their own. I think that is fine if you want to be banned from fishing your rivers for an indefiniate period to 'give nature a chance' ( which may or may not work!)
What you cannot tell of course is that is there was not hatchery stocking would the wild salmon numbers have declined anyway ? I suspect they would have....
There was then a very small bit about fish farming in Norway by Mr Frodin ( at about 55 mins) - which was interesting for about 2 mins. It was him swimming to cages to film what really goes on under the water. Once again no surprises - lots of gammy looking fish
Just struck me as a film paid for my the uber wealthy owner of Patagonia so he could complain about hatchery fish...
. All a bit too US based to be that relevant here I thought...
Just look at Iceland and the examples there. They seem to be able to use hatcheries and ranching to produce cracking runs of fish in rivers that would be dead otherwise....