Common name: Convict Tang

General Information

The Convict Tang, scientifically known as Acanthurus triostegus, is a striking fish recognized by its white to pale gray body adorned with six bold black vertical stripes, reminiscent of a convict's uniform. This species is a favorite among marine aquarists due to its vibrant appearance and active swimming behavior. Originally found in the Indo-Pacific region, it thrives in coral reefs and lagoons.

In the aquarium trade, the Convict Tang is appreciated for its role in controlling algae growth, making it a functional and attractive addition to a marine tank. Its energetic nature and schooling behavior add dynamic movement to any aquarium setup.

Care

Convict Tangs are relatively hardy but require a spacious tank to accommodate their active lifestyle. A minimum of 300 liters (approximately 80 gallons) is recommended to provide ample swimming space. They prefer a tank setup that mimics their natural reef environment, with plenty of live rock for grazing and hiding.

Maintaining stable water conditions and a diet rich in marine algae and plant matter is essential for their health. Regular water changes and monitoring of water parameters will ensure a thriving environment for this species.

Diet and Feeding

As herbivores, Convict Tangs primarily graze on algae in the wild. In captivity, their diet should include a variety of marine-based algae, seaweed sheets, and high-quality herbivore pellets. Offering a varied diet will help maintain their vibrant coloration and overall health.

Feed them small portions multiple times a day to mimic their natural grazing behavior. This frequent feeding ensures they receive adequate nutrition and helps prevent overgrowth of algae in the tank.

Behavior and Compatibility

Convict Tangs are generally peaceful but can exhibit territorial behavior, especially in smaller tanks or when introduced to new environments. They are best kept in larger tanks where they can establish their territory without conflict.

They are compatible with a variety of other peaceful marine species, including other tangs, provided the tank is large enough to accommodate multiple fish. Avoid housing them with overly aggressive species that may stress or outcompete them for food.

Health and Common Issues

Convict Tangs can live up to 10 years in captivity with proper care. They are susceptible to marine diseases such as ich and can be sensitive to poor water quality. Ensuring a stable environment and a balanced diet is key to their health.

When selecting a Convict Tang, look for active individuals with clear eyes and smooth, intact fins. Avoid fish that appear lethargic or have visible signs of disease.

Habitat

The natural habitat of the Convict Tang includes coral reefs and rocky shorelines in the Indo-Pacific region, from East Africa to the Hawaiian Islands. They are commonly found in shallow waters where they graze on algae-covered rocks.

Conservation Status

Currently, the Convict Tang is not listed as threatened or endangered. However, like many marine species, it is affected by habitat degradation and overfishing in some areas. Sustainable practices in the aquarium trade can help support their populations.