The Violet Jellyfish (Mastigia sp.), also known as the Spotted Lagoon Jellyfish, has a beautiful off-white hood (bell) with pure white spots and deep blue tentacles. They offer an amazing display of color and movement when placed under LED lights, and do best in jellyfish-exclusive tanks. Many jellyfish must be kept in these systems, as dead spots without current can be detrimental to the organism. They should be fed live baby brine shrimp multiple times a day. As is true for many cnidarians and corals, they require coral-grade lights with proper wavelength and PAR- their enclosure should also have minimal décor or obstructions, as edges can snag and harm the jellyfish. They reach a maximum size of 4 inches in captivity and can live up to 1 year.