In the winter period, the pond requires little attention. The pond water may be frozen. Plants do not require care and do not grow during this period. The fish in your pond will be less active and live on the bottom because the water on the bottom is warmer.
The fish also slow down at this time of the year, they ensure that their life processes function on the bottom, but at a lower level. It can be compared to hibernation, but for fish. If the fish are resting during this period, do not start working on the pond or near the pond.
At a very low water temperature of below 5 degrees, you would carefully give winter food to the fish. At these temperatures you should keep a close eye on your fish, the cold can cause disease symptoms. An alternative to this could be that you place a pond heater, which ensures that the pond does not freeze in certain places.