Raise bright and healthy koi fish. Mazuri Pond Nuggets Koi Fish Food offers complete nutrition with a taste koi can't resist! Made with ingredients that support vibrant coloration and healthy growth in koi. Mazuri Koi Pond Nuggets are suitable for fish 6 inches or larger. The particles float to encourage fish to come to the surface of your pond. This fish food contains fishmeal that is sustainably sourced from a supplier certified by the Marine Stewardship Council.