The Acanthurus bahianus, commonly known as the Ocean Surgeonfish or Bahia Surgeonfish, is a visually impressive tang prized in the marine aquarium hobby. This extra large specimen showcases the species’ characteristic oval body shape and vibrant colouration, making it a standout addition to a suitably sized reef or fish-only marine tank.
Care Level: Moderate to advanced. This species requires stable water parameters and a well-established aquarium.
Temperament: Generally semi-aggressive, especially towards conspecifics or similar tang species. Best kept singly or in a large tank with ample swimming space.
Diet: Primarily herbivorous. Provide a varied diet rich in marine algae, seaweed sheets (nori), and specialised herbivore pellets or flakes. Occasional meaty foods can be offered but should not dominate the diet.
Minimum Tank Size: Recommended minimum of 180 litres (approximately 50 gallons) to accommodate active swimming and territorial behaviour.
Reef Compatibility: With caution. While generally reef safe, they may nip at certain sessile invertebrates or coral polyps, especially if underfed.
Lighting and Water Flow: Standard marine aquarium lighting and moderate to strong water flow to mimic natural reef conditions.
Placement: Provide plenty of open swimming space along with live rock for grazing and shelter. Avoid overcrowding to reduce stress and aggression.
Origin: Western Atlantic, including the Caribbean Sea and Brazilian coast.
Maximum Size: Up to 35 cm (14 inches) in length.
Overall, the Extra Large Acanthurus bahianus is a rewarding species for marine aquarists who can provide the space and care it requires. Its striking appearance and active nature make it a captivating centrepiece in a suitably sized aquarium.
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