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Doubleband Surgeonfish (Acanthurus tennentii)

Find Doubleband Surgeonfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Doubleband Surgeonfish
Photo: Brian Gratwicke · CC BY 3.0
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Where to buy Doubleband Surgeonfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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  • Amazon

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  • Petco

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About Doubleband Surgeonfish

The Doubleband Surgeonfish displays a yellow-orange body with two distinctive dark bands running vertically across the head and gill region. It has the characteristic compressed body shape of Acanthuridae tangs, with a small venomous spine on each side of the tail base. The body transitions from yellow-gold to pale yellow ventrally.

Key facts

Care Level
Moderate
Family
Acanthuridae
Min tank size
75 gallons
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Temperament
Peaceful
Common Health Issues
Malnutrition, marine ich, fin rot, parasitic infections
Appearance
The Doubleband Surgeonfish displays a yellow-orange body with two distinctive dark bands running vertically across the head and gill region. It has the characteristic compressed body shape of Acanthuridae tangs, with a small venomous spine on each side of the tail base. The body transitions from yellow-gold to pale yellow ventrally.
Origin
Indo-Pacific region, including the Great Barrier Reef, Indonesia, and the Philippines. Found in coral reef environments from shallow to moderate depths.
Diet Details
Primarily grazes on algae in the wild. In captivity, provide dried seaweed (nori), marine algae sheets, and spirulina-based pellets as the staple diet, supplemented with small amounts of varied prepared foods.
Reef safety
Reef Safe
Care Requirements
• Minimum 75 gallon tank with plenty of open swimming space and rock formations for grazing • Temperature range 72–82°F; Salinity 1.020–1.026 SG; pH 8.0–8.3 • Herbivorous diet: feed high-quality marine algae sheets, nori, and spirulina-based foods 2–3 times daily; supplement with vitamin-enriched flake foods • Generally peaceful but may become territorial toward other tangs or similar-shaped fish; avoid housing with aggressive species • Provides algae control on rocks and sand; sensitive to water quality changes and poor nutrition (prone to malnutrition)
Feeding Schedule
2-3 times daily

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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