Sand Sifting Starfish invert

Sand Sifting Starfish (Astropecten polyacanthus) Care Guide
The Sand Sifting Starfish is a beneficial and fascinating invertebrate known for its ability to aerate and clean sand beds in marine aquariums. It is a hardy species but requires a well-established tank with a deep sand bed to thrive.

Habitat & Behavior
Found in tropical and subtropical sandy seabeds, often in shallow coastal waters.
Burrows under the sand, constantly moving and sifting for food.
Non-aggressive and reef-safe, but may outcompete other sand-dwelling organisms for food.
Aquarium Requirements
Tank Size: 50+ gallons (minimum) with an established sand bed.
Substrate: Fine sand, at least 3 inches deep for proper burrowing.
Water Flow: Moderate (too strong may disturb its burrowing).
Lighting: No special requirements—adapts to standard reef lighting.
Water Parameters
Temperature: 72-78°F
Salinity: 1.024-1.026
pH: 8.1-8.4
Ammonia/Nitrites: 0 ppm (sensitive to poor water quality)
Nitrates: <10 ppm (lower is better)
Diet & Feeding
Natural diet: Detritus, microfauna, and leftover organic matter in the sand.
Supplemental feeding: If food sources are low, offer sinking pellets, small pieces of shrimp, or meaty marine foods.
Monitor for weight loss—if the starfish appears thin or less active, increase feeding.
Tank Mates & Compatibility
? Reef-safe—does not harm corals.
? Compatible with most peaceful reef fish and inverts.
? Avoid predatory fish like puffers, triggers, and large wrasses—they may nip at the starfish.
? May outcompete other sand-dwelling creatures (e.g., certain sand-sifting gobies and Nassarius snails) for food.

Acclimation Process
Turn off tank lights to reduce stress.
Float the sealed bag in the aquarium for 15-20 minutes to equalize temperature.
Drip acclimate slowly over 1-2 hours to prevent osmotic shock.
Gently place the starfish onto the sand bed—do not place it upside down.
Monitor closely for the first few days to ensure it is burrowing and active.
Special Considerations
? Sensitive to rapid salinity and parameter changes—stable conditions are crucial.
? Do not expose to air during handling—this can trap air in its vascular system.
? May starve in newer tanks—ensure the sand bed is mature with enough food sources.
? Not suitable for nano tanks—requires ample space and a deep sand bed.