Sailfin Tang

The Sailfin Tang is one of the most visually dramatic members of the Zebrasoma genus, named for its enormous, sail-like dorsal and anal fins that can be fully extended to create an impressively tall, disc-shaped profile. The body features a striking pattern of alternating light and dark vertical bars overlaid with intricate spots and line markings that vary between individuals. Juvenile specimens are particularly stunning, displaying bold, high-contrast patterns that become somewhat more muted as the fish matures. This species is closely related to the Desjardin's Sailfin Tang (Zebrasoma desjardinii) of the Indian Ocean and Red Sea, and the two are sometimes confused in the aquarium trade.

In the wild, Sailfin Tangs inhabit lagoons and seaward reef slopes across the Indo-Pacific, from Indonesia and the Philippines to Fiji and Tonga. They are found singly, in pairs, or in small groups, grazing on filamentous and leafy algae growing on reef surfaces. Juveniles are often found in sheltered, shallow areas among branching corals. As they grow, Sailfin Tangs can reach an impressive 15 inches in length, making them one of the larger Zebrasoma species and requiring a correspondingly large aquarium.

In the home aquarium, the Sailfin Tang is a hardy and active species that adapts well to captive conditions. It is an excellent algae grazer that will help control nuisance algae growth on live rock and glass. However, it can become territorial and assertive as it matures, particularly toward other tangs and similarly shaped fish. A minimum tank size of 180 gallons is essential to provide adequate swimming room and reduce territorial aggression. When provided with sufficient space, a varied herbivorous diet, and good water quality, the Sailfin Tang is a rewarding and long-lived aquarium resident that quickly becomes a tank centerpiece.