Which makes more sense?
It makes more sense to have salmon eat their natural prey in their natural environment - it's been happening that way for thousands of years.
If there are too many fish or not enough feed, the ecosystem automatically adjusts itself.
I don't care if wild fish "convert" less efficiently than farmed fish - it doesn't matter because it's natural.
What you are doing is creating a food-chain "hole" where ever the feed fish are coming from (South America or China, where ever it is).
You are destroying the eco-system where the feed fish are harvested and starving the local predator organisms.
Whatever happens in nature, happens.
I resent people messing with it to make a buck.
Why don't you grow your own feed fish here, too?