NorthFin Krill Gold Premium Fish Food. With 85% whole Antarctic krill meal used as its main ingredient, Krill Gold/Pro Formula is the best natural colour-enhancing supplement. Feeding NorthFin’s unique filler-free formulas daily, together with Krill Gold/Pro colour enhancing supplement pellets, you are guaranteed radiant colours on all your aquatic fish. Available pellet size: 1, 2, 6 mm Pellet type: Slow sinking pellets Recommended for: All types of freshwater and saltwater, carnivore and omnivore fish. Available Sizes: 1 mm (80 g, 250 g, 1 kg) 2 mm (500 g) 6 mm (250 g, 500 g)