Pond Boss Forums STOCKING A NEW POND Types of fish to choose Walleye Disappeared?

We have a few walleye in our Perch pond up here in Ontario. The pond is very deep, 16 on one end and 12 on the other end. We have never seen or caught any of the walleye that are in our pond. They should be really large as they were stocked in 2015 and were already 18"s. We only put in 5 in our one acre pond. I think they are doing their job as the Perch are amazing. I think they just get well adapted to the pond and seem to be very elusive.