Despite what your animal-loving instincts might tell you, koi and goldfish will not starve if you stop feeding them during the winter.
In fact, you’re giving them a better chance of avoiding health issues this way. When the water temperature drops below 55°F the metabolism of the fish slows way down. Koi, and goldfish, can’t process most foods they eat during this time and could develop, potentially fatal, digestive issues. Any uneaten food left in the water tends to be harmful for the fish as it diminishes the water quality. You can start feeding them once the water get’s above 55°F. As a safe alternative, consider feeding your fish crushed Cheerios. That’s right, this great breakfast cereal can provide wonderful winter sustenance without causing any digestive problems… just don’t add milk.
Here are some of our fish just hanging out. Check out that water quality!