Poor plan unless it is your own pond with no way to reach other bodies of water. Just today I went to a local lake here in AZ and saw about a dozen 2ft long Koi in what is supposed to be a trout reserve. I'm sure these fish will eat more than their share of fingerling trout as they get quite a bit larger than the average trout in this lake. Another example of irresponsible hobbyists taking their toll on the local environment. :roll:hyposalinity said:Release the goldfish into a pond, buy Cichlid pellets, problem solved.