IAMS Original with Ocean Fish and Rice is recommended for Adult cats one year and older. Nutrient-Rich Ocean Fish Provides Essential Taurine IAMS Ocean Fish & Rice Formula is made with delicious ocean fish as the first ingredient. Ocean Fish & Rice provides all of the essential amino acids needed to help keep cats healthy, including taurine for clear eyes and a strong heart. Ocean Fish & Rice contains low dietary magnesium and helps maintain a healthy immune system. Vitamin-rich fish oils found in IAMS Ocean Fish & Rice Formula promote a healthy inside and shining outside. And our patented fibre source helps maintain colon health, for a long and healthy life.