First Mate - Limited Ingredient Diet Pacific Ocean Fish Meal With Blueberries Formula Dry Cat FoodThis formula is ideal for cats and kittens of all life stages. We use wild caught herring, anchovy and sardines as the primary source of protein. The full fish is used rather than heads and frames. Our Pacific Ocean Fish With Blueberries is rich in antioxidants, low in ash and magnesium. It is also free of peas, flax and chicken protein.