Scientific Name : Euphausia superba Promotes Color Krill are harvested from Antarctic waters and contain extremely high Omega-3's and astaxanthin (a carotenoid responsible for the vibrant colors of tropical fish). Excellent for your large freshwater and marine tropicals. Krill provide essential nutrients that help maintain high energy levels and vigor in your fish. Product Features All natural Highly nutritious Natural color enhancer Excellent for large carnivores Promotes proper growth Whole krill in flat packs and chopped krill in cubes Recommended For Saltwater: Triggers, Puffers, Groupers, Eels, Lionfish, Angels and others. Freshwater: Central & South American Cichlids, Pirahna, Catfish, Koi, Aquatic Turtles and others.