The Achilles Tang (Acanthurus achilles) is a visually stunning species prized for its deep black body contrasted with bright orange markings and a distinctive white spot near the tail. This large tang is a popular choice among experienced marine aquarium enthusiasts due to its active swimming behaviour and striking appearance.
Care Level: Moderate to advanced. The Achilles Tang requires stable water conditions and a well-established aquarium.
Temperament and Compatibility: This species is semi-aggressive and can be territorial, especially towards other tangs or similar-shaped fish. It is best kept singly or in a large tank with plenty of hiding spaces to reduce stress and aggression. Avoid housing with overly aggressive species.
Diet: Primarily herbivorous, the Achilles Tang thrives on a diet rich in marine algae and seaweed. Supplement with high-quality herbivore flakes, pellets, and occasional meaty foods to ensure balanced nutrition.
Minimum Tank Size: A minimum of 180 litres (approximately 50 gallons) is recommended to provide ample swimming space and maintain water quality.
Lighting and Water Flow: Moderate lighting and moderate to strong water flow mimic their natural reef environment and support healthy algae growth for grazing.
Placement: Provide plenty of live rock for grazing and shelter. Open swimming areas are essential to accommodate their active nature.
Origin: Native to the central Pacific Ocean, including Hawaii.
Maximum Size: Up to 23 cm (9 inches) in length.
With proper care, the Achilles Tang is a captivating addition to large marine aquariums, offering both beauty and dynamic movement.



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