For a small pond like that stock green sunfish.
They have big mouths and will feed on your minnows.
They will overpopulate providing hours of fun for your kids to go fishing.
And then you can catch out the excess and use them to go flathead catfishing...
At least that is what I would do but I like to fish for big catfish and a pond full of stunted sunfish would provide a ready supply of bait.
