I meant to say, I wonder why most species of SF are NOT stocked more. I can see why a predator such as LMB would be useful. If only the larger fish are kept by fishermen, the number of smaller fish may rapidly grow too large. The right number of the right predators of the right size can control that problem in a nice way. Which gets us back to the clasical BG/LMB scenario. But maybe by stocking only SF species that aren't such prolific reproducers as BG, the need for a top predator could be eliminated if someone didn't want to go that route.
