Aqua Master Wheat Germ Fish Food, 11-Pound/Bag, Small Enriched nucelotide enhances koi immunity Fresh wheat germ and krill greatly increase koi appetite in low water temperatures Coated with Bacillus Subtilize natto to facilitate digestion and reduce water contamination Astaxanthin and organic minerals enhance anti-oxidation and result in more brilliant and vibrant scale colors 4 Bags/carton; 3.5-4.0 millimeter Enriched nucleotide enhances koi immunity Fresh wheat germ and krill greatly increase koi appetite in low water temperatures Coated with bacillus subtilize natto to facilitate digestion and reduce water contamination Astaxanthin and organic minerals enhance anti-oxidation and result in more brilliant and vibrant scale colors 4 Bags/carton; 3.5-4.0 millimeter