Your pond is your pride and joy—a tranquil world of shimmering color and graceful movement. But sometimes, even in paradise, things can go wrong. One morning your koi aren’t greeting you for breakfast, or maybe they’re hiding at the bottom, acting... off. Don’t panic (yet). Koi have a language of their own, and once you learn to read it, you’ll know exactly when they’re happy—and when something’s fishy.