Acanthurus olivaceus | L

The Acanthurus olivaceus, commonly known as the Olive Surgeonfish, is a large and visually captivating tang native to the Indo-Pacific region. Its olive-green body with subtle markings makes it a standout addition to mature marine aquariums.

Temperament and Compatibility: This species is generally semi-aggressive and territorial, especially towards other surgeonfish and similar-shaped tangs. It is best housed with other robust fish species and should be introduced into a well-established tank to reduce stress and aggression.

Diet: Primarily herbivorous, the Olive Surgeonfish thrives on a diet rich in marine algae and seaweed. Supplementing with high-quality herbivore flakes, pellets, and occasional meaty foods ensures balanced nutrition.

Tank Requirements: Due to its large size and active swimming nature, a minimum tank size of 180 litres (approximately 50 gallons) is recommended. Providing ample swimming space with live rock for grazing and hiding spots will promote natural behaviours and reduce stress.

Water Parameters and Environment: Maintain stable marine conditions with a temperature range of 24-27°C, salinity of 1.020-1.025 SG, and moderate water flow. Lighting should support algal growth for natural grazing but does not require intense illumination.

Reef Compatibility: With caution. While generally reef safe, the Olive Surgeonfish may nip at corals or clam mantles, so careful monitoring is advised in reef setups.

Overall, the Acanthurus olivaceus is a rewarding species for aquarists seeking a robust and visually appealing tang, provided its care requirements and temperament are respected.