The Juvenile Naso Unicorn Tang is commonly referred to as the Bluespine Unicorn Tang, Bluespine Unicorn Surgeonfish, Large Unicorn Tang, Green Naso Tang or Unicorn Tang. With its blue-green to olive body color along with a blue edged dorsal and anal fins, it makes a beautiful and captivating addition to your aquarium. In its juvenile stage the horn has not appeared, but develops when it reaches a size of approximately 6 inches. The horn is located on the head and does not extend farther than the tip of the snout. This Naso Unicorn Tang fish has large, permanently erect peduncle spines that can easily be tangled in the net or cause injury to the handler. The Naso Unicorn Tang adapts well to tank life, especially tanks with lots of live rocks that encourages the growth of natural algae and plenty of hiding spots.