When I close my ponds out back for the winter (3 of them), I keep the large one open. They contain my large koi and a bass, some bluegill and a couple catfish.
I close my deck pond and bring those fish inside for the winter, as well as the smaller fish in the small pond. Each year there is one or two that get transferred to the large pond as they are too big for our inside ponds.
Here's one of my indoor ponds housing these fish. I wanted to show you how they attack their food. My grandson hand feeds them as well.
I have a pump and a small aquarium water heater inside the pond. We keep the water around 76 degrees.
Unfortunately a couple days ago two of our fish jumped out and we found them on the floor. Too late to save them. So I put a screen covering on top. This is the first time it ever happened but be aware of that possibility if you do this.
