Whitefish Formula comes from the fish that are found in the cold waters of the Pacific Northwest and Alaska. Whitefish contains heart healthy Omega-3 fatty acids, as well as vitamins and minerals for a healthy, happy dog. Whitefish is a rich source of Niacin, Phosphorous, and Selenium. And our recipe is completely grain free, providing a hypoallergenic option for those dogs that may have food sensitivities or allergies. Zignature® Whitefish Formula – Learned from Nature, Crafted to Perfection.