Corkman,
I apologize for hijacking your thread for a quick question.
The shellcracker/RES are just about neutral or transparent in ponds, yet they are extremely important in our area. They don't compete with the bass or bluegill, but they provide a very important service by helping keep the other pondfish free of white and yellow parasitic grubs. The grubs are transferred to ponds via water fowl poop. They become prolific by hosting on fish in the pond, reproducing, and creating crustaceons that the shell crackers thrive on.
Ken,
Illinois DNR says I am too far north for RES so I stocked PS. Will PS provide a similar benefit as the RES in the pond ecosystem?
Bill