There are a lot of things that I would put in a pond before Gams.

Fathead Minnows
Bluntnose Minnows
Lake Chubsuckers
Mississippi Grass Shrimp
Papershell Crayfish
Golden Shiners
Threadfin Shad (depending on what part of NC)

Those are really all great choices and it would be hard to go wrong with any/all of them.