Encyclopaedia
Magnificent Foxface
Siganus magnificus
A spectacular rabbitfish with an elongated snout and red-bordered fins. Equipped with venomous defensive spines.
- Family
- Siganidae
- Origin
- Eastern Indian Ocean (Andaman Sea, Thailand to Indonesia)
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaSouth and Southeast Asia
- Tank use
- Used in 0 tanks
Share
22 °C - 27 °C
8.1 - 8.4
Marine
Metà vasca
23 cm
Species description
Geographical Origin and Habitat: Eastern Indian Ocean, distributed in the Andaman Sea, from Thailand to Indonesia. Inhabits coastal coral reefs rich in benthic algae.
Taxonomy and Morphology: Family Siganidae. Commonly known as the Magnificent Foxface. Oval, compressed body with a fox-like snout and teeth adapted for grazing algae. Reaches about 23 cm.
Social Behavior: Generally peaceful toward other species but markedly intolerant of other members of its own family. Shy when exposed to sudden movements outside the tank.
Coloration and Sexual Dimorphism: Body split between black on the back and white on the belly, with a black snout striped in white and brilliant red-orange bordered fins. No sexual dimorphism.
Care, breeding and tankmates
Aquarium Setup: Requires a tank of at least 450 liters with ample open swimming space and mature live rock covered with benthic algae for grazing.
Diet and Feeding: Herbivore. Main diet should consist of marine algae (nori), fresh blanched vegetables, and high-quality veggie dry food. Accepts brine shrimp occasionally.
Water Quality: Optimal marine parameters: temperature 22-27°C, pH 8.1-8.4, salinity 1.020-1.025. Requires a powerful protein skimmer.
Compatibility and Cohabitation: Great tankmate for large community systems. May nip at soft corals or LPS if underfed. *VENOMOUS SPINES:* Exercise extreme caution during maintenance.
Aquarium Breeding: Undocumented in home aquariums. In the wild, they release pelagic eggs in large aggregations corresponding to lunar phases.
Risks and Diseases: The primary risk is represented by its venomous dorsal and anal spines which can inflict painful stings. Prone to stress-induced skin issues.
Fish profile
- Temperament
- Pacifico con altre specie ma aggressivo con consimili
- Diet
- Erbivoro (alghe bentoniche, nori, spinaci sbollentati, mangimi vegetali di alta qualità)
- Tank level
- Metà vasca
- Minimum group
- 1
- Adult size
- 23 cm
- Minimum tank volume
- 450 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Singolo o coppia
- Feeding frequency
- 2-3 volte al giorno
- Bioload
- High
- Flow
- Movimento moderato
- Jump risk
- Covered tank required
- Reproduction
- Non riprodotto in acquariofilia commerciale; rilascia uova pelagiche in grandi gruppi.
- Compatibility & tankmates
- Molto utile per controllare le alghe infestanti. Può spizzicare coralli molli o LPS se non alimentato a sufficienza. Spine velenose!
Ecological Estimates & Biological Models
- Trophic level
- 2.7 ± 0.29 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.01413, b = 3.05
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Other recommended species with similar care requirements and water parameters.





