Speaking of predators, I figure if the koi I put in the older pond make the water muddy, then the GBH and otters cannot see to fish. Those 5 koi sure did muddy up the forage pond last year when I was growing them big enough to escape LMB predation. I saw all 5 of them a couple of times this week, still growing. I'd rather have muddy water than predators and FA.