Foxface rabbitfish reef compatibility check
Siganus vulpinus
Foxface rabbitfish (Siganus vulpinus) is an intermediate-level rabbitfish that needs at least 100 gallons. It is reef safe with caution; may nip some corals. Temperament is peaceful and adults reach about 9 inches. ReefCrafter schedules it as middle-stage livestock, with no tank-age gate beyond a finished cycle.
Algae grazer for large reefs where coral-nipping and adult size are acceptable risks.
Who it is for
Good fit for
- ✓ Tanks of 100+ gallons at the animal's adult size.
- ✓ Newly cycled tanks with a compatible stocking list.
- ✓ Peaceful community tanks.
Not a fit for
- ✕ Tanks under 100 gallons, even while it is small.
- ✕ Keepers without some reef experience and stable parameters.
- ✕ Reefs where the cautions on this page would put existing corals or inverts at risk.
- ✕ May nip some corals.
Compatibility warnings
- May nip some corals.
- Venomous spines require care.
- Check adult size against the final tank, not the fish or coral at purchase size.
- Add livestock slowly so the bioload and nutrient export can keep up.
- Use the planner when this animal changes the tank-size, flow, lighting, or stocking plan.
Professional planning context
- Use the 100 gallon minimum as an adult-planning floor; display length, aquascape, and existing tankmates can raise that floor.
- This can be planned early after cycling, but only after quarantine/acclimation logistics and stocking order are settled.
- Professionals should model aggression by territory and introduction order, not only by care level.
Tank fit and maturity gate
ReefCrafter uses 100 gallons as the planning floor for adult size, swimming room, nutrient load, and aggression margin.
This species can be planned early when the tank is cycled and the rest of the stocking list is compatible.
Care notes
- Temperament
- Peaceful
- Reef safety
- Caution
- Adult size
- 9 in
- Placement
- Build dependent
- Diet
- Build dependent
- Flow
- Varied
- Light
- None
- Bioload
- 3.2
- Stocking stage
- Middle
Related species
- Copperband butterflyfish
Same 100-gallon floor, expert care.
- Purple tang
Same 100-gallon floor, reef safe.
- Blue hippo tang
125+ gallons, reef safe.
- Powder blue tang
125+ gallons, expert care, reef safe.
Equipment that fits
- Red Sea Reefer Peninsula 500 G2+ Aquarium System (109 Gal)
109-gallon display, above this animal's 100-gallon floor.
- CADE Pro Reef 900 Series 2
110-gallon display, above this animal's 100-gallon floor.
- Red Sea Reefer 525 G2+ System (112 Gal)
112-gallon display, above this animal's 100-gallon floor.
Related reading
Questions
What size tank does the foxface rabbitfish need?
ReefCrafter plans for at least 100 gallons, based on an adult size of about 9 inches, plus swimming room, nutrient load, and aggression margin. Use the adult size, not the size at purchase.
Is the foxface rabbitfish reef safe?
It is reef safe with caution in ReefCrafter's catalog. Watch for: May nip some corals; Venomous spines require care.
Is the foxface rabbitfish good for beginners?
It is rated intermediate care, so most beginners should add it later, after parameters have been stable.
When should I add the foxface rabbitfish to my tank?
ReefCrafter treats it as middle-stage livestock, with no tank-age gate beyond a finished cycle. Add livestock slowly so nutrient export keeps up.