Sand Sifting Starfish

Sand Sifting Starfish

The Sand Sifting Starfish (Archaster typicus) is the unsung workhorse of the reef cleanup crew — a tireless, methodical cleaner that does its best work completely out of sight. Burrowing beneath the sandbed surface, this species continuously sifts through substrate, consuming detritus, uneaten food, and organic waste before it can break down and fuel nuisance algae or spike nutrients. While your skimmer handles the water column and your snails patrol the glass, the Sand Sifting Star is down in the substrate doing the dirty work that nothing else in your tank will touch.

Beyond its cleanup value, Archaster typicus is one of the most consistently active and visible starfish available in the hobby. Unlike many starfish that hide and rarely move, this species is constantly in motion — gliding across the sandbed surface, disappearing beneath it, and re-emerging in a different spot hours later. Its attractive tan and grey banding pattern with a textured, granular surface makes it visually appealing even when it is out in the open, and it will frequently emerge to cruise across the rockwork after the lights dim.

Peaceful, reef safe, and genuinely hardy compared to many starfish species, the Sand Sifting Star is an easy recommendation for any system with a sandbed — and a genuinely valuable one.

Available Options

Care Information

Special Considerations

🔍 Aquarium Insights

• One of the few CUC members that actively aerates the sandbed as it works — preventing anaerobic dead spots that can produce hydrogen sulfide in deep substrates
• More active and visible than most starfish species — frequently seen gliding across the sandbed surface and rockwork after lights dim
• A genuinely functional addition that improves sandbed health in ways no other CUC member can replicate — and one of the easiest starfish to keep successfully long term

Learn More

For detailed species information, compatibility, and care tips, visit our Species Library.