
Foxface rabbitfish
Siganus vulpinus · Siganidae
Also known as Foxface lo
Intermediate
A big, calm yellow algae eater with venomous dorsal spines — handle with care.
In short: A foxface rabbitfish needs at least 380 L (100 US gal), water at 24–28 °C (75–82 °F) and pH 8.1–8.4. It is peaceful, usually kept singly, and rated intermediate to keep.
- Minimum tank
- 380 L (100 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Adult size
- 24 cm (9.4 in)
- Group size
- 1+
Reef & marine husbandry
- Specific gravity
- 1.023–1.026
- Reef safety
- Reef safe with caution
- With corals
- Usually leaves coral alone, but a hungry one grazes soft coral and zoanthids.
- With inverts
- Reef safe.
- Minimum in a mixed reef
- 380 L (100 US gal)
- Minimum fish-only (FOWLR)
- 380 L (100 US gal)
- Aggression
- Peaceful; spines are defensive only.
- Feeding
- Nori clipped daily plus two feeds.
Care requirements
- Minimum tank volume
- 380 L (100 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Hardness
- 8–12 dGH
- Lifespan
- 8–15 years
- Diet
- Herbivore — nori daily, algae pellets, blanched greens.
- Care level
- Intermediate
Origin & habitat
- Native region
- Western Pacific and eastern Indian Ocean
- Water type
- Saltwater
- Biotope
- Coral-rich lagoons and reef flats
- Natural conditions
- Moderate to strong flow, open swimming space.
Behaviour & stocking
- Temperament
- Peaceful
- Minimum group
- 1 fish
- Swims
- All levels
- Good tank mates
- TangsClownfishWrassesAngels
- Avoid
- Other rabbitfishTiny nano tanks
Breeding & difficulty
- Breeding difficulty
- Advanced
- Sexing
- No external difference.
- Notes
- Not bred in captivity.
- Common ailments
- Marine ichHLLE
Will it fit your tank?
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