Orange Shoulder Tang Acanthurus Olivaceus

Overview:
The Orange Shoulder Tang is a vibrant and active marine herbivore, easily identified by its dark bluish-gray body, bright orange patch on the shoulder, and yellow accents along the fins. Its bold coloration and graceful swimming make it a striking addition to large reef aquariums.

Origin:
Native to the Indo-Pacific, commonly found on coral reefs, lagoons, and outer reef slopes from East Africa to Hawaii.

Feeding:
Primarily herbivorous – thrives on marine algae, seaweed, and spirulina-based foods, supplemented with occasional meaty foods like mysis shrimp for a balanced diet and to maintain vibrant coloration.

Tank Mates:
Best housed with peaceful to moderately semi-aggressive tank mates. Can coexist with other tangs if the aquarium provides sufficient space to reduce territorial behavior.

Aggression:
Moderately territorial – may defend feeding or swimming areas, especially in smaller tanks, but generally peaceful in spacious aquariums.

Experience Level:
Intermediate aquarists – requires a mature, stable aquarium with ample swimming space, good water quality, and a consistent herbivore diet.

Water Parameters:

• Temperature: 74–80°F (23–27°C)
• pH: 8.1–8.4
• Salinity: 1.020–1.025
• Minimum Tank Size: 150+ gallons

The Orange Shoulder Tang is a visually striking, active herbivore, ideal for reef or large community marine tanks where a bold and functional algae grazer is desired.