... Most fish if not all in your aquarium will eat seaweed like butterfly fish, clown fish, engineering gobies, damsels, some ... parrotfish, angle fish, all tangs and even freshwater fish. Saltwater Correct dried purple seaweed is plain and simple, just whole wild saltwater ... plant, rich in vitamins A, B1, B2, B3, C, and E, iron, iodine, potassium, and ...