Pencil Urchin

The Pencil Urchin (Echinothrix calamaris) is a distinctive reef invertebrate known for its long, pencil-like spines and robust appearance. Its unique spines and calm demeanor make it an intriguing addition to any reef aquarium.

Pencil Urchins thrive in a temperature range of 72-78°F and prefer slightly alkaline water conditions. They are hardy and can adapt to various water parameters, making them suitable for a range of reef setups.