The Hikari Goldfish Gold Diet contains colour enhancing ingredients including phaffia dried yeast and astaxsanthin to help keep your fish looking their best. It is also enriched with polyphenol, an antioxidant derived from grapes to support a healthy immune system. With no artificial colours or flavours, this diet is nutritionally balanced as an ideal starter diet and requires no supplemental feeding. The floating pellet is easy to feed and allows for simple monitoring of your pets food intake.