Hikari Seaweed Extreme is a scientifically developed diet for all types of marine herbivores, such as angel fish and tangs. This food is an ideal supplemental diet for herbivorous marine fish with more than 67% natural seaweed Feed no more than your pet will consume within two minutes, two to three times each day. Hikari Seaweed Extreme absorbs water rapidly and takes on a soft texture similar to wet Nori Algae, making it difficult to remove any uneaten food. For this reason, to avoid over-feeding, we suggest smaller feedings until you find the ideal amount for your mix of fish. Note: Hikari Seaweed Extreme contains higher levels of natural ingredients which may cause a slight change in color from one production lot to another. Rest assured because of our rigid quality standards each package meets our superior nutritional specifications. Features: 1.Hikaris technological expertise helped develop the World's 1st wafer containing more than 67% natural seaweed! 2.This highly aromatic wafer, which softens rapidly when put in water, instantly attracts herbivorous species. Best of all the transition from Nori Algae is a snap. 3.The outstanding nutrient mix offers rapid growth and helps support immune system health while helping maintain coloration. 4.Ideal supplemental diet for most omnivorous species, including clownfish, damsels and butterflies. 5.Developed, produced and packaged in our facilities so we can be assured you'll always get the Hikari quality you expect!