Description
Masked Rabbitfish (Siganus virgatus)
Overview
The Masked Rabbitfish, also known as the Barhead Rabbitfish, is a striking reef fish featuring a silver-yellow body, vivid blue striping, and a distinctive dark “mask” across its eyes. Hardy, active, and useful for controlling algae, it’s a beautiful and practical addition to large community or reef aquariums.
Origin
Native to the Indo-Pacific region, particularly around the Philippines, Indonesia, and the Great Barrier Reef, this species inhabits coral reefs and lagoons, often seen grazing on algae in pairs or small groups.
Feeding
An herbivore that thrives on a diet rich in marine algae, seaweed, and plant-based foods. Supplement with spirulina, nori (dried seaweed), and high-quality herbivore pellets; will also consume some meaty foods. Feed 2–3 times daily for best color and health.
Tank Mates
Peaceful and reef-safe with caution—though it may occasionally nip soft corals if underfed. Best kept with other non-aggressive fish such as tangs, wrasses, angelfish, and clownfish. Avoid housing with very small or timid species that may be startled by its size.
Aggression
Generally peaceful, though may show mild territorial behavior toward other rabbitfish or similar-shaped species in confined spaces. Keep singly unless in a large system.
Experience Level
Ideal for intermediate aquarists. The Masked Rabbitfish is hardy and adaptable but requires a spacious, mature tank with ample swimming room and live rock for grazing.
Water Parameters
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Temperature: 75°F – 82°F (24°C – 28°C)
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Salinity: 1.020 – 1.025 SG
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pH: 8.1 – 8.4
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Alkalinity: 8 – 12 dKH
Vibrant, hardy, and algae-eating, the Masked Rabbitfish is both beautiful and beneficial—making it a standout choice for large reef and community aquariums.
