For years I had a single goldfish living in my frog pond. (About 10 feet in diameter and 3-4 feet deep. Natural runoff, no pumps.) That fish disappeared one year, (perhaps frozen due to silting in of the pond?) so I dug out the pond (with back hoe) and purchased ~$1 worth of feeder goldfish from the local pet store (Seven fish I think.) Those fish spawned and I've now got 7 big fish (~6") and ~40-50 small fish. (2-3") in the pond. This seems like way too many. Any good ideas on how to catch the fish? About 1/3 of the fish are a bland gray color and I'd like to remove those first. The pond is dug in a heavy clay soil. I'm also thinking of digging another little pond upstream from this one for the frogs... which are going to have a hard time reproducing in the (now) goldfish pond.