OnLookSuper nutritious natural Red/Purple/Green Seaweed. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish. Available in foil packaging in two sizes: 30g (1 oz) and 12g (0.4 oz)