The Acanthurus coeruleus, commonly known as the Blue Tang, is a striking addition to any large marine aquarium. This Extra Extra Large specimen showcases the vibrant blue colouring and graceful swimming behaviour that make this species highly sought after by experienced hobbyists.
Care Level: Moderate to advanced. Due to its size and activity level, this tang requires a well-established aquarium with stable water parameters.
Temperament: Generally semi-aggressive. It can be territorial, especially towards other surgeonfish or tangs, so careful consideration is needed when selecting tank mates.
Diet: Primarily herbivorous. Provide a varied diet rich in marine algae and seaweed, supplemented with quality prepared foods such as spirulina flakes, pellets, and occasional meaty treats.
Minimum Tank Size: At least 250 litres (approximately 65 gallons) to accommodate its active swimming and territorial behaviour.
Reef Safety: With Caution. While generally reef safe, it may nip at certain sessile invertebrates or corals, so monitor behaviour closely.
Lighting and Water Flow: Standard marine aquarium lighting is suitable. Moderate to strong water flow mimics natural reef conditions and supports the health of this active fish.
Placement: Provide ample open swimming space along with live rock for grazing and shelter.
Origin: Western Atlantic, including the Caribbean Sea.
Maximum Size: Up to 38 cm (15 inches) in length.
Adding an XXL Blue Tang to your marine setup brings vibrant colour and dynamic movement, but ensure your aquarium meets the space and care requirements to keep this species thriving.



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