Hikari Wheat Germ Formula is recommended as a daily diet for koi or larger goldfish when improved digestion is required. It is a scientific diet for promoting improved digestion, growth, and fertility of koi and other pond fish in cooler water temperatures. This nutrient mix is made with the innermost portion of the wheat germ kernel as its first ingredient. Added with vitamins like vitamin E and vitamin C, this nutrient package offers multiple health benefits for your koi. It also helps support the immune system's health and reduces the chance of bloat or swim bladder issues. It also helps give the white areas of your koi a translucent depth and higher gloss appearance.