Nori-Seaweed-Sheets-Perfect-for-Marines-Corals-DIY-Food-Making-Aquatic-Foods-Freeze-Dried-Tropical-Fish-Foods Published May 13, 2017. Size: 500 × 500 in Nori Seaweed Sheets, Premium Restaurant Grade Green 4″ x 7.5″ Sheets. Perfect for Marine Tangs, Angelfish, Butterflies, African Cichlids. All Herbivorous and Omnivorous Tropical Fish. < Previous Next >