ChilDawg, 55 degrees is actually exactly when goldfish shouldn't be fed anymore. Feeding should be tapered off as the water temperature drops. Many pond keepers also change the type of food they provide to a mixture with less protein, as it is healthier for the fish. Through the winter the fish will go into a hibernation of sorts, where their metabolism slows to a crawl, they become inactive and they live off of body fat. In spring, after the water warms up past 55 degrees and the fish begin to move around and look for food on their own, begin feeding again in small amounts.