Lieutenant Tang

The Lieutenant Tang, *Acanthurus tennentii*, is a striking surgeonfish native to the Indo-Pacific region. This species is easily recognized by its distinctive markings, which typically include two horizontal black bands behind the eye, resembling epaulets or lieutenant’s bars, giving it its common name. The body is generally a muted brown or gray, providing a subtle backdrop for these prominent markings.

A minimum tank size of 180 gallons is recommended for the Lieutenant Tang due to its potential size and active swimming habits. This species requires ample space to roam and graze. They are considered to have an intermediate care level, suitable for experienced aquarists. A well-established aquarium with plenty of live rock for grazing and hiding is essential.

In the aquarium, the Lieutenant Tang is primarily a herbivore and should be offered a varied diet consisting of high-quality marine algae, spirulina, and other vegetable matter. Supplementing their diet with frozen foods like mysis shrimp or brine shrimp is also beneficial. Providing nori seaweed attached to a rock or clip is an excellent way to ensure they receive adequate nutrition. They can reach a maximum size of around 12 inches in captivity. While generally peaceful towards other fish, they can be territorial towards other tangs or surgeonfish, especially those of similar size or shape. Introducing them to the aquarium last can help minimize aggression.