Description
Bicolor Foxface Rabbitfish (Siganus uspi)
Overview
The Bicolor Foxface is a rare and striking species distinguished by its dramatic two-tone coloration—rich black on the front half of its body and bright yellow on the rear. Hardy, peaceful, and a superb algae grazer, this beautiful rabbitfish adds both function and flair to large reef or community aquariums.
Origin
Endemic to Fiji and surrounding Pacific islands, Siganus uspi inhabits coral-rich lagoons and outer reef slopes, often found in pairs grazing among rocks and coral heads.
Feeding
Primarily herbivorous, it thrives on a varied diet of marine algae, seaweed, and plant-based foods. Supplement with spirulina, nori, and herbivore pellets, along with occasional meaty treats. Feed 2–3 times daily for best health and coloration.
Tank Mates
Peaceful and reef-safe with caution. Compatible with most community fish such as tangs, angelfish, wrasses, and clownfish. Avoid aggressive or fin-nipping species, and ensure plenty of swimming space and rockwork.
Aggression
Generally calm and non-aggressive, though it may display mild territorial behavior toward similar-shaped species. Keep singly unless in a very large system.
Experience Level
Recommended for intermediate aquarists. The Bicolor Foxface is hardy and adaptable but does best in a mature, stable aquarium with ample algae growth and hiding areas.
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
Rare, hardy, and visually stunning, the Bicolor Foxface Rabbitfish is both a natural algae controller and a standout showpiece for any large reef or community aquarium.
