Google salmon hatcheries and the evidence is overwhelming in saying they dont work. I personally believe that the smaller fish we have now are a product of mixing hatchery genetics with our wild fish, the genetics have been compromised hugely. I cant see any improvement in this as there are fish farms that have escapes and these probably/undoubtably imo influence the wild fish by cross breeding ?
I think this is one of the major influences in the poor returns and I think Fish and Game have really dropped the ball on this issue.
https://www.thepress.co.nz/nz-news/3...s-fish-screens
I think the other influence for pooer returns is warmer sea water, salmon are a cold water species.
Not much can be done about this.
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