I have this pond I did and installed a planting and a bench. The customer has added aftermarket goldfish,I didn't install the fish and someone is maintaining the water- eagles come and eat the fish every couple days. What have other people done to prevent birds from preying on your fish? How about racoons and the like? I am thinking of wire in the tree canopy to deter them, firearms are not an option. I also have placed bird shadows on areas as well as dummy owls and scarecrows, all to no avail. What next?