The Gem Tang, Zebrasoma gemmatum, is an extremely rare variation of tang. The Gem Tang is famous for its spectacularly brilliant white spots across its iridescently shimmering black body. Its yellow anal fin further adds to the Gem Tang's starkly contrasting hues. The Gem Tang should be the centerpiece of a large tank, will eat meaty and herbivorous foods, can grow up to 8 inches, and is reef compatible.  The Exquisite Gemmatum "Gem" Tang (Zebrasoma gemmatum) in Saltwater Marine Aquariums The Gemmatum Tang, known as the "Gem" Tang, is a captivating and prized addition to saltwater marine aquariums. Its vibrant colors and distinct patterns bring elegance and splendor to any reef environment. Let's delve into the Gemmatum Tang's habitat, reef-safe nature, size, lifespan, diet, aquaculture potential, compatibility, suitable tank mates, tank requirements, other common names, and compatible tank mates. Habitat The Gemmatum Tang is native to the pristine waters of the Western Indian Ocean, specifically around Madagascar's coast. In the wild, they inhabit coral reefs and rocky areas with strong currents. Reef Safe Considered reef safe, the Gemmatum Tang mainly feeds on algae and plant matter. However, like all tangs, they may need more algae and appropriate food to prevent coral nipping. Size and Lifespan Growing up to 7 to 8 inches (17 to 20 cm), the Gemmatum Tang can live several years with proper care. Diet This tang is herbivorous, primarily consuming filamentous and macroalgae in the wild. In captivity, they require a varied diet of high-quality marine algae sheets, spirulina-based pellets, and occasional fresh or frozen vegetables. Aquaculture While less common in the trade, most Gemmatum Tangs are collected from the wild due to the rarity of captive-bred specimens. Compatibility Generally peaceful but territorial towards similar species, selecting compatible tank mates is vital for harmony. Suitable Tank Mates Angelfish (e.g., Emperor Angelfish): Certain angelfish species add diversity to the tank's appearance. Wrasses (e.g., Six-Line Wrasse): Peaceful wrasses provide movement and color. Boxfish (e.g., Yellow Boxfish): Peaceful boxfish offer a unique addition. Anthias (e.g., Lyretail Anthias): Suitable, especially in larger aquariums with ample space. Clownfish (e.g, Ocellaris Clownfish): Suitable in reef tanks, other species of clownfish are also suitable Tank Requirements A spacious aquarium with ample swimming space and hiding spots mimics their natural habitat. Stable water conditions and proper filtration are essential. Other Common Names Also known as the "Star Gem Tang" or "Starry Sailfin Tang." In conclusion, the Gemmatum "Gem" Tang (Zebrasoma gemmatum) is a breathtaking addition to saltwater marine aquariums. Its vibrant colors and distinct patterns make it highly sought-after. Provide a suitable environment and compatible tank mates to admire the allure and beauty of these tangs in your aquarium. With care, the Gemmatum Tang can thrive and become the focal point of admiration.