I have a pond that is full of bass. I have stocked goldfish in it numerous times and have still not had a single goldfish live long enough to reproduce to my knowledge. I think Bill is exactly right. The big orange goldfish are just like a big piece of candy to a bass that is eaten in one bite. The bass prefer the goldfish to the bluegill due to the color, soft fins and the goldfish are easy to catch. I bet you will have some very fat bass and very few goldfish very soon!