I’ve been trying to figure out winter feeding, being a virgin goldfish mumma! I’m in southern England. My biggest goldies are 5-6” with lots of babies from this summer of various sizes. With the most recent frosty mornings they are not interested in food, water temp 7-8degs C, but as the day warms up they then start looking for lunch!! So do I feed or not?? Tried wheat germ but they haven’t gone for that. Confused!!
8 C, if my converter is correct, is 46.4 F.
Most stop feeding at 50 F (10 C).
Some don't feed at all, ever, even in the Summer. I think those with koi have to feed, but goldfish, not so much.
Don't worry, the fish can survive on algae, other plants and bugs.
See addy's posts #12 & #16. She hardly feeds at all.
I'm guessing your fish are sending you a signal that they are slowing down, getting ready for winter.
Mine are not feeding much. I threw some food out one morning over the weekend and by late afternoon some of the food was still floating around. During the Summer, that food would have been gone in minutes.
I stopped feeding after that. They are on their own until Spring.
Do you have any plants in the pond?