The guy who dug my pond told me one can just go down to the river here and catch some Yellow Perch and toss them in. No need for minnows as the little perch act as feeders.

He said they get to be the size of a big man's hand, 2" thick, and taste great.
He says that even when his pond almost dries up, they survive.
Probably cannibals, I guess.

Now I'll see what this forum says about YP...