Best Koi Food Brands – USA Perhaps the best option for basic koi food, the Tetra Pond Koi Vibrance blend is a fantastic, well balanced dietary addition that has the perfect amount of protein, fiber, and nutrients to naturally bring out the bright reds and oranges that make kois so stunning to admire!   Additionally, the food is designed to be easy to digest. It is actually hollow inside and small enough that it breaks down easily and will not create an intestinal blockage as easily as other “pellet” or “stick” foods. Plus, since it is easily digested, less waste