Whitespotted Surgeonfish (Acanthurus guttatus)

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

Whitespotted Surgeonfish

Quick facts

Scientific nameAcanthurus guttatus
FamilyAcanthuridae
Also known asMustard Guttatus Tang
Care levelModerate
Reef safetyReef Safe with Caution
TemperamentSemi Aggressive
Dietherbivore
Adult size9 in
Minimum tank size120 gallons
Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Feeding schedule2-3 times daily

Appearance

The Whitespotted Surgeonfish is a dark gray to brown-bodied surgeonfish (tang) featuring distinctive white spots or streaks scattered across its head and body. It has a laterally compressed body shape characteristic of Acanthuridae, with a prominent retractable venomous spine on each side of the caudal peduncle.

Diet and feeding

Feed a varied herbivorous diet including high-quality dried seaweed (nori), spirulina-based flakes, and frozen herbivore preparations. Supplement with occasional small amounts of meaty foods like mysis shrimp.

Difficulty and care for the Whitespotted Surgeonfish

The Whitespotted Surgeonfish is moderately difficult, requiring a spacious tank, stable water conditions, and a consistent herbivorous diet. It is generally hardier than some tangs but can be aggressive toward other surgeonfishes and similar-shaped fish.

Common health issues

Ich (marine ich), fin rot, velvet disease, parasitic infections if stressed

Origin and habitat

Indo-Pacific region, ranging from the Red Sea and East Africa through the Indian Ocean to the central Pacific, including Indonesia, Philippines, and Micronesia.

Log Whitespotted 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 Whitespotted Surgeonfish alongside everything else in your reef.