The Acanthurus japonicus, commonly known as the Japanese Surgeonfish, is a visually striking tang species prized for its vibrant blue and yellow markings. This extra large specimen offers a bold and captivating presence in any suitably sized marine aquarium.
Care Level: Moderate to advanced. This species requires stable water conditions and a well-established tank.
Temperament: Generally semi-aggressive. Suitable tank mates include other tangs and robust reef-safe species, but caution is advised when housing with smaller or more passive fish.
Diet: Primarily herbivorous. Provide a varied diet rich in marine algae, seaweed sheets, and high-quality herbivore pellets or flakes. Occasional meaty foods can be offered to supplement nutrition.
Minimum Tank Size: At least 180 litres (approximately 50 gallons) to accommodate its active swimming behaviour and territorial nature.
Reef Compatibility: Yes, with caution. While generally reef safe, this tang may nip at some sessile invertebrates or soft corals, so monitor behaviour closely.
Lighting and Water Flow: Standard reef aquarium lighting is suitable. Moderate to strong water flow mimics natural habitat conditions and promotes health.
Placement: Provide ample swimming space with plenty of live rock for grazing and hiding. Avoid overcrowding to reduce stress and aggression.
Origin: Native to the Western Pacific, including waters around Japan.
Maximum Size: Up to 25 cm (10 inches) in length.
With proper care, the Acanthurus japonicus makes a stunning and dynamic addition to larger marine aquariums, combining beauty with engaging behaviour.
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