Fowler’s Surgeonfish
Acanthurus fowleri
| Stock | Variations | Price | Quantity | |
|---|---|---|---|---|
| Out of Stock | 3.75 - 4.5" - Indo-Pacific | Original price was: $963.99.$505.99Current price is: $505.99. | Email me |
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Monday – Friday 8 AM – 9 PM
Saturday 12 PM – 4 PM
Sunday 12 PM – 9 PM
Healthy, stable animals from vetted suppliers — inspected before packing, shipped overnight. Decades of experience built this model so we can deliver premium livestock at 30%+ less than you'd pay elsewhere.
| Care Level | Expert |
|---|---|
| Temperament | Semi-Aggressive |
| Reef Safe | Yes |
| Functional Benefit | Algae Control |
| Diet Type | Herbivore |
| Mininum Tank Size | 300 gallons+ |
| Max Size | 18 inches |
| Temperature | 72–78°F |
| pH Range | 8.1–8.4 |
| Specific Gravity | 1.022–1.025 |
Fowler’s Surgeonfish (Horseshoe Tang) is a large Acanthurus tang kept for consistent algae grazing and constant open-water movement in big reef displays. Adults show a blue-to-purple head, a bluish-gray body, and a distinct horseshoe-shaped mark near the shoulder that becomes more defined as the fish settles in.
What You’ll Observe:
- Long, steady cruising laps across the full length of the aquarium, with frequent turns through open rock arches
- Regular grazing passes over rock faces and overflow areas, especially during the brightest part of the photoperiod
- A predictable “patrol route” that becomes more consistent over the first few weeks
- Bold, food-driven behavior at feeding time, often learning the clip/feeding station quickly
For best results, provide a long aquarium with open swimming lanes and mature rockwork the fish can graze throughout the day. Offer dried seaweed on a clip routinely, and rotate in herbivore pellets plus frozen foods so the fish stays engaged at mealtime. If keeping multiple tangs, a clear feeding routine and multiple feeding stations help each fish keep a comfortable rhythm.
Why do some small Fowleri Tang juveniles not show the horseshoe mark clearly?
In smaller fish the pattern can be faint or incomplete at first, and it usually becomes more obvious as the fish grows and settles in.
Will the coloration change much after it’s introduced?
Many keepers report the blues and purples deepen over the first couple of weeks as the fish acclimates and follows a consistent light/feeding schedule.
How fast do they “feel bigger” in the tank compared to other tangs?
Because they cruise continuously and use the full tank length, they tend to look like they outgrow a system earlier than more rock-focused tangs.
What’s a reliable way to get one eating prepared foods quickly?
Start with a consistent seaweed clip location, then mix in herbivore pellets and small frozen offerings so it associates your feeding station with multiple textures.
Can it coexist with other tangs without constant drama?
It’s often described as more manageable with non-tangs, and hobbyists usually plan tang combinations by adding the calmer, larger-bodied fish earlier and maintaining plenty of space and grazing zones.
Each fish is checked for strong appetite and activity before we approve it for your tank.
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