The Pencil Urchin is solitary. During the day, it seeks to find shelter in the rocks. At night it will come out looking for food & lives on algae, bryozoans, sponges, and tunicates. It should be noted that this urchin is destructive to corals.

COMMON NAME:		LongSpine Urchin
SCIENTIFIC NAME:		Eucidaris tribuloides
SIZE AVAILABLE:		~1-2 inch
MINIMUM TANK SIZE:		30 gallons
FOOD/DIET:		Herbivore
CARE LEVEL:		Moderate
REEF SAFE:		No
AVAILABILITY:		Most always available - 99%