This is kind of what we have done and I had the same thoughts as you. If the yellow perch and walleye can't be managed over a 10 year period small mouth bass will be added to the mix. Maybe even later anyways for some diversity.

We stocked our one acre pond with 400 yellow perch. There was some sun fish high bred added too but they didn't handle the winter and all died. Only predator fish in our pond is the yellow perch. Fat head minnows, emerald shiners, and common shiner are the forage and are doing very very well. Perch are pellet trained and are feeding on the pellets leaving the minnows alone. Crayfish are doing very well with a full spawn of them this summer. This is our second full year feeding the perch and they have gone from 4-6" to 10-12" on average.

I have seen some but very very few spawned in pond perch. I am waiting to see a full spawn that is expect to see this spring. I am hoping to see this years spawn as minnows this spring in our minnow trap. We have not been able to find any young perch this year at all.

As soon as I am sure there has been a good spawn of perch in the pond I will add 10-15 8" walleye to the mix.

This is my experience with a perch pond. They are very very tasty too.

Cheers Don.

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7/8th of an acre, Perch only pond, Ontario, Canada.