How do you take care of a little koi fish?
Koi are pretty temperature-resistant— they can even hibernate under ice in winter. Just be sure your pond is at least three feet deep— otherwise, it could freeze solid, and koi aren’t that tough. When they live indoors, koi prefer cool water—between 65 and 75 degrees F (18 to 24 C).
What do koi fish need to survive?
Koi are cold-water fish but thrive in water temperatures between 59-77 degrees Fahrenheit. Because their metabolism reacts to the temperature of the water that they live in, you’ll want to be sure your pond has both shallow areas as well as spaces that are deep enough so it does not freeze to the bottom.
Do koi fish need special water?
Water that has a variety of minerals in good balance is best for koi. Distilled water (which will not support koi) added to a bit of sea water for its salt and mineral content, is perfect for Koi. In Niigata, pure water comes from from snow, soaks into the ground and collects various minerals.