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Chocolate Surgeonfish (Acanthurus chocolate)

Find Chocolate 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.

Chocolate Surgeonfish
Photo: Bernard DUPONT from FRANCE · CC BY-SA 2.0
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Where to buy Chocolate Surgeonfish

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

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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    Search Petco

About Chocolate Surgeonfish

The Chocolate Surgeonfish is a dark brown to nearly black tang with a distinctive white or pale stripe running along the dorsal fin edge. It has the characteristic compressed body shape and venomous spine (scalpel) at the base of the tail typical of acanthurid tangs. The mouth is small and positioned low on the head, adapted for grazing.

Key facts

Temperament
Semi Aggressive
Care Requirements
• Minimum 75 gallon tank with strong water flow and open swimming space • Temperature range 72–82°F; maintain stable conditions • Salinity range 1.020–1.025 SG • Feed herbivorous diet 2-3 times daily; provide natural algae-covered rock surfaces • Monitor for territorial aggression toward other tangs; may nip at soft corals if hungry • Acclimate slowly and avoid rapid water parameter changes
Care Level
Moderate
Diet
herbivore
Difficulty Level
The Chocolate Surgeonfish requires stable water conditions and adequate space for grazing. It is hardier than some tangs but demands consistent quality care and compatibility management with tankmates.
Diet Details
Feed primarily dried seaweed, nori, and spirulina-based preparations 2-3 times daily. Supplement with high-quality herbivorous pellets formulated for tangs. Live rock with natural algae growth is beneficial for grazing behavior.
Reef safety
Reef Safe
Family
Acanthuridae
Water Parameters
Temperature: 72-82°F pH: 8.1-8.3 Salinity: 1.02-1.025
Min tank size
75 gallons
Appearance
The Chocolate Surgeonfish is a dark brown to nearly black tang with a distinctive white or pale stripe running along the dorsal fin edge. It has the characteristic compressed body shape and venomous spine (scalpel) at the base of the tail typical of acanthurid tangs. The mouth is small and positioned low on the head, adapted for grazing.
Feeding Schedule
Feed 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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