Powder Brown Tang Fish

The Powder Brown Tang, *Acanthurus japonicus*, is a striking surgeonfish known for its elegant appearance and active nature. Its body is primarily a rich, chocolate brown, accented by a bright white band that runs along the base of the dorsal fin and a vibrant yellow stripe that highlights the anal fin. A distinctive white ring encircles the eye, and a sharp, retractable scalpel is located at the base of the tail, characteristic of all tangs.

A minimum tank size of 70 gallons is recommended to provide ample swimming space and accommodate its active lifestyle. A well-established aquarium with plenty of live rock is essential, as the Powder Brown Tang is a voracious grazer and will spend much of its time picking at algae. While generally considered reef-safe, some individuals may occasionally nip at certain corals or invertebrates, so careful observation is advised in a mixed reef environment.

In the home aquarium, the Powder Brown Tang typically reaches a size of around 6-8 inches. It is primarily an herbivore and requires a varied diet consisting of marine algae, such as nori, offered on a veggie clip, as well as high-quality flake and pellet foods formulated for herbivores. Supplementing their diet with occasional offerings of mysis shrimp or other meaty foods can also be beneficial. Like other tangs, they are susceptible to marine ich, so maintaining excellent water quality and providing a stress-free environment is crucial for their health.

Quick Facts

• Scientific Name: Acanthurus japonicus
• Care Level: Intermediate
• Temperament: Semi-Aggressive
• Diet: Herbivore
• Reef Compatibility: Reef Safe
• Region of Origin: Indo-Pacific
• Maximum Adult Size: 10"
• Recommended Tank Size: 75 gallons