Hello everyone. I am new to the forum. I have a 500 gallon Koi/goldfish pond that I built about 7 years ago. This year something is eating the eyeballs from my fish. I lost 3 fish in the last 3 weeks. Never had a problem before this. I am thinking it is a raccoon but I know they don't go in the water and I can't figure out how it is catching them. It leaves the dead fish on the cement. So sad. Anyone have any solutions. I did put a net over my pond today to help protect the 5 I have left.