Bicolor Foxface Rabbit Fish Siganus Uspi

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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

• Temperature: 75°F – 82°F (24°C – 28°C)

• Salinity: 1.020 – 1.025 SG

• pH: 8.1 – 8.4

• 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.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

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