Bill, wild caught is all I have access to. My water temp is currently 64 in all depths. I would like to do this year round but also doubt over wintering. With ice at 36" thick and after seeing the massive slabs heaving in spring, I would think the cages would be destroyed. Do perch spawn in these pens normally?. I would consider adding perch to my pond but have no baitfish and don't think I could pellet train them if they were free-swimming. I would also worry about over-population and subsequent stunting even if they would take to some feed. Trout do not do a good job of controlling perch in local lakes around here.
I don't want to spoil a good thing, we've caught and released over 300 trout from an original stocking of 150 a year ago May. I feed every day now and am impressed at their growth. I would just like a little diversity and something for a meal once in awhile. Thanks for the info Bill.
John.