I have a large (about 7,000 gallons) communal pond in my townhouse complex that I have taken on as a project. It has gone from being an algae filled swamp to a clean, lovely pond with several recently installed hardy water lilies. A well-meaning resident recently added fish without permission. She thought it would be fun for her grandchildren to feed them when they visited. Unfortunately, we also have raccoons who come around in the evening. The pond cannot possibly be screened (way too big), the edges are gently sloping which cannot be changed now, so the raccoons have no problem entering the pond and they are creating havoc with the lilies. The fish are growing big and multiplying like crazy! Our pond is not set up to support fish and I am not at all happy about this. I tried scooping them out with my pool net, without success. I don't want to kill them, but they are a huge attraction to the destructive raccoons.
We live in Vancouver, B.C Canada. Do you think the fish will die off naturally in the winter months? The pond is not set up to support fish. They're clearly thriving now, but once winter comes I don't know what will happen to them.