NorthFin Veggie Formula Premium Fish Food. NorthFin Veggie Formula focuses on the health of your herbivore fish. Unlike other herbivore formulas, NorthFin uses premium organic certified kelp as its main ingredient. Perfect measurements of Spirulina and Astaxanthin are added to ensure your herbivore fish will obtain a full nutritional balanced diet. Allowing them to thrive in their habitat with a strong and healthy immune system, creating a more active aquarium. Available pellet size : 1, 2, 3 mm Pellet type: Slow sinking pellets Recommended for : All types of freshwater and saltwater, herbivore and omnivore fish. Available Size: 1 mm (100 g, 250 g, 500 g, 1 kg, 2.5 kg) 2 mm (100 g, 500 g, 1 kg, 2.5 kg) 3 mm (100 g, 250 g, 500 g, 1 kg, 2.5 kg).