Care guide, husbandry, breeding, disease, and sourcing intelligence on Foxface Rabbitfish - written by the Fast Aquatics editorial team.
Foxface Rabbitfish at a glance
Adult size: 9 inches · Min tank/pond: 125 gallons · Difficulty: intermediate · Diet: herbivore · Lifespan: 5-10 years.
Foxface Rabbitfish (Siganus vulpinus) is a popular saltwater fish in the aquarium and pond hobby. Suitable for keepers with 6-12 months of stable-tank experience.
Where Foxface Rabbitfish comes from
Foxface Rabbitfish (Siganus vulpinus) is native to Indo-Pacific reef ecosystems. Wild populations distribute across coral reefs from East Africa through Indonesia, the Philippines, and into the western Pacific. Captive-bred Foxface Rabbitfish is increasingly available and is the more sustainable choice when you can find it.
Foxface Rabbitfish tank size and setup
Foxface Rabbitfish requires a minimum of 125 gallons for healthy adults. The minimum is based on 9 inches adult size and territorial range. For Foxface Rabbitfish, plan a mature reef tank with stable parameters, sand bed, live rock for cover, and reef LED if photosynthetic.
Water parameters for Foxface Rabbitfish
Foxface Rabbitfish requires standard reef parameters: temperature 76-80°F, specific gravity 1.025, pH 8.1-8.4, alkalinity 8-9 dKH, calcium 420-450 ppm, magnesium 1300-1400 ppm, ammonia + nitrite 0 ppm, nitrate under 10 ppm. Use a refractometer (not hydrometer) to measure salinity.
What Foxface Rabbitfish eats
Foxface Rabbitfish is a herbivore. Provide algae sheets, algae-based pellets, and supplemental veggies. Skip a feeding day per week for tank biology. Browse our food guides for product recommendations.
Foxface Rabbitfish tankmates and compatibility
Foxface Rabbitfish is best paired with peaceful reef-tank species in similar size class. Avoid known fin-nippers and large aggressive species.
Foxface Rabbitfish adult size and lifespan
Foxface Rabbitfish reaches 9 inches at adulthood with a captive lifespan of 5-10 years with proper care.
Can you breed Foxface Rabbitfish?
Foxface Rabbitfish breeding in captivity ranges from straightforward to very difficult. Captive-bred specimens are increasingly available from sustainable aquaculture facilities.
Common Foxface Rabbitfish diseases and problems
Foxface Rabbitfish is susceptible to ich, velvet, marine flukes, and bacterial infections. Quarantine new Foxface Rabbitfish for 4-6 weeks before adding to display.
Where to buy Foxface Rabbitfish online
Foxface Rabbitfish is sold at LFS, online retailers, and direct from breeders. Browse live Foxface Rabbitfish from vetted Fast Aquatics vendors with carrier-tracked overnight shipping, climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims.
Related saltwater species you might also keep
Other species in the same category with care profiles on Fast Aquatics. Click any name for the full husbandry breakdown.
Foxface Rabbitfish taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.