Care guide, husbandry, breeding, disease, and sourcing intelligence on Magnificent Foxface - written by the Fast Aquatics editorial team.
Magnificent Foxface at a glance
Adult size: 9 inches · Min tank/pond: 125 gallons · Difficulty: intermediate · Diet: herbivore · Lifespan: 5-10 years.
Magnificent Foxface (Siganus magnificus) is a popular saltwater fish in the aquarium and pond hobby. Suitable for keepers with 6-12 months of stable-tank experience.
Where Magnificent Foxface comes from
Magnificent Foxface (Siganus magnificus) 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 Magnificent Foxface is increasingly available and is the more sustainable choice when you can find it.
Magnificent Foxface tank size and setup
Magnificent Foxface requires a minimum of 125 gallons for healthy adults. The minimum is based on 9 inches adult size and territorial range. For Magnificent Foxface, plan a mature reef tank with stable parameters, sand bed, live rock for cover, and reef LED if photosynthetic.
Water parameters for Magnificent Foxface
Magnificent Foxface 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 Magnificent Foxface eats
Magnificent Foxface 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.
Magnificent Foxface tankmates and compatibility
Magnificent Foxface is best paired with peaceful reef-tank species in similar size class. Avoid known fin-nippers and large aggressive species.
Magnificent Foxface adult size and lifespan
Magnificent Foxface reaches 9 inches at adulthood with a captive lifespan of 5-10 years with proper care.
Can you breed Magnificent Foxface?
Magnificent Foxface breeding in captivity ranges from straightforward to very difficult. Captive-bred specimens are increasingly available from sustainable aquaculture facilities.
Common Magnificent Foxface diseases and problems
Magnificent Foxface is susceptible to ich, velvet, marine flukes, and bacterial infections. Quarantine new Magnificent Foxface for 4-6 weeks before adding to display.
Where to buy Magnificent Foxface online
Magnificent Foxface is sold at LFS, online retailers, and direct from breeders. Browse live Magnificent Foxface 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.
Magnificent Foxface taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.