In my pond I currently have 6 calico fantails which I would like to breed next year. I also have about 10 Shubunkins that are very small babies and only about 1 inch or 25mm long. Should I put the fish in a large 3ft x 1ft aquariums in an unheated garage or should I leave them in the pond? They temperature in winter is normally about 2c and occasionally it goes to -2c for a few day. I do have any electricity in my garage.