Ocean Surgeonfish (Acanthurus bahianus)

Fish in the family Acanthuridae. Moderate care. Reef Safe.

Ocean Surgeonfish

Quick facts

Scientific nameAcanthurus bahianus
FamilyAcanthuridae
Also known asBarber Surgeonfish
Care levelModerate
Reef safetyReef Safe
TemperamentSemi Aggressive
Dietherbivore
Adult size9 in
Minimum tank size75 gallons
Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Feeding schedule2-3 times daily

Appearance

The Ocean Surgeonfish is a small tang with a laterally compressed body and predominantly blue-grey coloration. It features a yellow stripe running along the dorsal fin edge and distinctive yellow markings on the tail peduncle. Like all surgeonfishes, it has a sharp, venomous spine on each side of the tail base used defensively.

Diet and feeding

Feed high-quality marine herbivore preparations, dried seaweed (nori), and macroalgae such as Ulva or Saccharomyces multiple times daily. Supplement with occasional spirulina-based foods to ensure adequate nutrition.

Difficulty and care for the Ocean Surgeonfish

Moderate difficulty. The Ocean Surgeonfish requires stable water conditions, adequate tank space, and a consistent herbivorous diet. It is hardier than many other tangs but can be territorial and may require careful tank mates.

Common health issues

Ich (marine white spot disease), fin rot, parasitic infections

Origin and habitat

Western Atlantic, found in the Caribbean Sea and along the coasts from Florida to Brazil, including the Bahamas and Gulf of Mexico.

Log Ocean Surgeonfish in your reef tank

Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Ocean Surgeonfish alongside everything else in your reef.