Serpent starfish reef compatibility check
Ophioderma sp.
Serpent starfish (Ophioderma sp.) is an intermediate-level starfish that needs at least 50 gallons. It is reef safe with caution; large specimens can become opportunistic; avoid green brittle stars for small fish. Temperament varies and adults reach about 8 inches.
Scavenger for mature reefs where size, feeding, and tankmate risk are understood.
Who it is for
Good fit for
- ✓ Tanks of 50+ gallons at the animal's adult size.
Not a fit for
- ✕ Tanks under 50 gallons, even while it is small.
- ✕ Keepers without some reef experience and stable parameters.
- ✕ New tanks; wait until the system is about 4+ months old.
- ✕ Reefs where the cautions on this page would put existing corals or inverts at risk.
Compatibility warnings
- Large specimens can become opportunistic; avoid green brittle stars for small fish.
- 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 50 gallon minimum as an adult-planning floor; display length, aquascape, and existing tankmates can raise that floor.
- Hold this entry until the system has at least 4 months of maturity or equivalent stability evidence.
- Invert plans should account for copper exposure, acclimation sensitivity, predation risk, and whether the tank can actually feed the animal.
Tank fit and maturity gate
ReefCrafter uses 50 gallons as the planning floor for adult size, swimming room, nutrient load, and aggression margin.
This animal should wait until the tank has enough age, food web stability, or parameter history.
Care notes
- Temperament
- Varied
- Reef safety
- Caution
- Adult size
- 8 in
- Placement
- Build dependent
- Diet
- Build dependent
- Flow
- Varied
- Light
- None
- Bioload
- 0.5
- Stocking stage
- Middle
Related species
- Sand sifting starfish
100+ gallons, expert care.
- Maxima clam
Same 50-gallon floor, expert care, high light, reef safe.
- Pincushion urchin
40+ gallons.
- Derasa clam
75+ gallons, high light, reef safe.
Equipment that fits
- CADE Pro Reef 600 Series 2
60-gallon display, above this animal's 50-gallon floor.
- Waterbox AIO 65.4 Aquarium System (65 gallons)
65-gallon display, above this animal's 50-gallon floor.
- SC Aquariums 66 Gallon Starfire Rimless Reef System (PNP)
66-gallon display, above this animal's 50-gallon floor.
Related reading
Questions
What size tank does the serpent starfish need?
ReefCrafter plans for at least 50 gallons, based on an adult size of about 8 inches, plus room to forage and the stability a larger water volume gives. Use the adult size, not the size at purchase.
Is the serpent starfish reef safe?
It is reef safe with caution in ReefCrafter's catalog. Watch for: Large specimens can become opportunistic; avoid green brittle stars for small fish.
Is the serpent starfish good for beginners?
It is rated intermediate care, so most beginners should add it later, after parameters have been stable for 4+ months.
When should I add the serpent starfish to my tank?
ReefCrafter treats it as middle-stage livestock for a tank at least 4 months old. Add livestock slowly so nutrient export keeps up.