I wish somebody could explain how my 8 and 9 year old son came home 3 months ago and said they caught frogs,mimmows and 4 bream(about 2 1/2 inches long) in a swimming pool(yes swimming pool)at a house in out neighborhood that had been vacant for 9 months.i don't think we have many people go to the local pool to go fishing.myself and 2 other dad's went to the pool to see for ourself.this pool was in pretty bad shape for lack of use,but it did that the above in it.the new owner said when they cleanned the pool it had thousand's of minnows in it and 2 other fish,he did not know what they were put said they were also about 2-3 inches long.