Two Little Fishies Julian Sprung's SeaVeggies Purple Seaweed (30g) Super nutritious natural Purple 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. 30g (1 oz)