I started out with a dozen. Then a dozen catfish. In November we had a strange occurance. We had lost over 400 cat and gold fish. The Forestry guy said that usually happens in the spring. It happened when we had cold weather then real hot right after and it zapped the pond of it's oxygen. I was so upset. Dan just came in and told me he saw a young goldfish jump in the pond. I must go and see if I have any pictures of my pond online!! Oh and not so good news.........I had a snake. Yuck.