Short Spine Sea Urchin

Name: Short Spine Sea Urchin (Medium)
Scientific Name: Echinometra sp. (often sold as “Shortspine/Rock-burrowing Urchin”)
Maximum Size: About 3 inches across the body
Favorite Things: Grazing film algae and diatoms on rock and glass, hiding in rock crevices by day, and roaming at night; hardy clean-up crew staple.
Best Buddies: Reef-safe with fish and most inverts; may pick up small shells or frags while moving. Provide stable salinity and plenty of rock to graze.