Tiger Muskie are sterile and thus cannot reproduce. Northern pike reproduction could potentially occur in a cooler-water pond, i.e. one in a northern clime or a southern clime at high elevation; it would be much less likely in the South. Someone (TJ? not sure) recently posted data he had read stating that they require very specific conditions to spawn successfully even up North, those conditions including water that isn't turbid, good weedgrowth, etc.