I'm not sure what kind of environment pure muskies need to spawn, but further, I'm not sure how you'd keep control over a muskie population that spawns and recruits.
Any muskies, tiger or other, are going to eat indiscriminately, however, depending on if you get stockers of all similar size, they will move through slot limits of food, to a degree, and perhaps allow some other fish to grow in parallel.
Maybe you could get 20 tiger muskies, and an army of crappie fisherman. That would make some kind of impact.
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