... ,competitive price! best food for fish,fish love it! dried purple seaweed/Tang Fish Food Saltwater Correct Dried Purple Seaweed ... very nutritious purple seaweed that your fish will devour. Feed your fish a regular diet of purple seaweed ... seaweed like butterfly fish, clown fish, engineering gobies, damsels, some parrotfish, angle fish, all tangs and even freshwater fish. Saltwater Correct dried ...