Xtreme is regarded as one of the very best premium aquatic foods in the world. Xtreme Aquatic Food diets are formulated using premium ingredients including krill, shrimp, herring, squid, menhaden, octopus along with USA grown spirulina and proprietary Bio-Pack vitamins and minerals. Highest quality marine and vegetable proteins produce natural colour enhancing whilst promoting healthy growth, strong immune systems and active breeding. 100% Hormone free.