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Foxface rabbitfish (Siganus vulpinus)
Photo: Dr. Dwayne Meadows, NOAA/NMFS/OPR · Public domain via Wikimedia Commons

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
Tangs
Clownfish
Wrasses
Angels
Avoid
Other rabbitfish
Tiny nano tanks

Breeding & difficulty

Breeding difficulty
Advanced
Sexing
No external difference.
Notes
Not bred in captivity.
Common ailments
Marine ich
HLLE
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