Orange Shoulder Tang Acanthurus Olivaceus

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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.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

All livestock deliveries are subject to our full Delivery Terms & Conditions, please read before ordering.