My grandma has a oscar that might be able to compete with that. I think it is between 8-10 years old. Her tank is **** though, there are no filters and the only thing that has kept it alive is one lonely powerhead. But it has kept it alive for a long time so its a fishkeeping miracle. There is at least 2- 3 pounds of solid oscar **** at the bottom, but it keeps kickin. So if it is not broke don't fix it. I have took care of that tank for long anough and I am done.