These goldfish live in my little pond in the back yard. I don't feed them all winter, so on the first day of spring I threw out some food and they were ready to eat. One of my fish is 15 years old!
Sounds like they "hibernate" for the winter like our two desert tortoises do. We dont feed them during the winter either...... but when they came out of hibernation earlier this week, they were ready for a meal. One of your fish is 15 years old?? Whoa! What is the life expectancy?