The scientifically developed Saki-Hikari Fancy Goldfish diets utilize the finest quality ingredients we can find, including a patented, living probiotic. A merging of world-class technology, nutritional balance and patented ingredients allow us to bring you this revolutionary diet."Hikari Germ" is a strain of Bacillus bacteria which, when fed, proliferates itself inside the intestine of the Goldfish offering many incredible benefits.