So can we have too many shiners in our pond? I would have to say they are not all just common shiners but a cross with creek chub. We seem to be catching more shiners than yellow perch. The shiners beat the perch to the bait.
At this point the shiners are way larger than the perch can eat. Some in the 10" range. We have added a couple walleye but not near as many as I would have like to add.
Should we add a couple trout to our pond. I do have better access to trout than walleye. The perch are not at all over populating the pond as much as these shiners are.
Dono - You have found a way to successfully spawn chubs. Picture is a chub. You should publish your method for growing creek spawning shiners and chubs. Shiners and chubs should not hybridize because each belongs to a separate taxonomic genus. Different genera rarely if ever will hybridize. If they did we could cross a bass with a bluegill (sunfish).
I would try trout and see what happens. You might grow some really big trout if the water stays cool enough for summer trout survival.