gold and white goldfish

I think that I may still have a few too many fish in my pond. I'd like to trade about five fish for some Water Lettuce. I have some Water Lettuce in my pond but I think the fish are eating it quite a bit. Which is fine, but I'd like to have more in the pond so that it covers the water surface more again.

I have gold and white goldfish that are about three to six inches in size. They look very healthy to me.