Black-Barred Zebra Tang

The Black-Barred Zebra Tang (Acanthurus polyzona) is an algae-grazing surgeonfish recognized by its pale body with bold dark vertical bars and distinctive facial markings. It’s a Western Indian Ocean species associated with reef habitats around islands such as Mauritius, Réunion, Madagascar, and the Comoro Islands.

What You’ll Observe:

• Cruises the rockwork and open water in steady loops, then returns to graze on hard surfaces
• Picks at film and filamentous algae throughout the day, especially once it learns where food appears
• Spends time in higher-movement areas of the tank, using flow to “hover” and turn quickly
• Develops a consistent routine around feeding time and often makes repeated passes by a veggie clip

Provide open swimming room with mature live rock or rock structures that grow natural algae, plus strong, consistent water movement. Offer dried nori daily and rotate algae-based flakes/pellets with varied frozen foods to keep feeding behavior consistent. With other tangs, adding it with a clear “line of sight break” layout helps everyone settle into separate cruising lanes.

How can I tell this species apart from a Convict Tang?
Count the bars and look closely at the face—A. polyzona is typically noted for more bars and more intricate facial markings than A. triostegus.

Will it try to “claim” a favorite route in the tank?
Many keepers notice tangs establish repeated loops; adding extra arches and pass-throughs helps distribute traffic naturally.

Does constant nori feeding change how it behaves around corals?
Regular access to algae sheets and grazing surfaces often keeps attention focused on rockwork and glass instead of sampling other textures.

What’s the best way to get it eating quickly after introduction?
A veggie clip with nori near its preferred swim path, plus small offerings of mixed frozen and quality pellets, usually gets steady feeding started.

Is it normal for the bars and body color to look different under various lights?
Yes—tangs commonly appear more contrasted under blue-heavy lighting and less contrasted under daylight settings.

Each fish is checked for strong appetite and activity before we approve it for your tank.