Description
Acanthurus dussumieri, commonly known as Dussumier’s Tang, is a large and highly active surgeonfish prized for its sleek body, subtle iridescence, and commanding presence in expansive marine aquariums. While juveniles may appear understated, mature specimens develop a refined blend of grey, blue, and metallic tones with fine patterning and a strong, streamlined profile, making them an impressive feature fish in large systems.
Native to the Indo-Pacific, this species inhabits open reef areas and lagoons, where it continuously grazes and patrols large territories. Its size, speed, and constant movement make it best suited for aquariums with substantial swimming space.
Lighting: Moderate to high; adapts well to standard reef lighting
Flow: High; thrives in strong, well-oxygenated water movement
Placement: Active swimmer occupying mid to upper water column with extensive open space
Temperature: 75–80°F (24–27°C)
Salinity: 1.0265 SG (35 PPT)
pH: 8.1–8.4
Alkalinity: 8–10 dKH
Diet: Herbivorous; requires a diet rich in marine algae, nori, and high-quality herbivore preparations, supplemented with frozen foods
Aggression: Semi-aggressive; may become territorial toward other tangs, especially in confined spaces
Adult Size: Up to 50 cm
Care Level: Advanced – requires very large aquariums, strong filtration, and stable conditions
Compatibility: Reef-safe; best suited for large systems with carefully selected tank mates and ample swimming room
