Pencil Urchin

Pencil Urchin

(Eucidaris tribuloides / Heterocentrotus spp.)

Large marine urchin with thick blunt “pencil-like” spines and slow-moving behavior. Excellent algae grazer that adds unique texture and movement to marine aquariums; may rearrange loose rockwork or frags while climbing.

Size:
~2–4" body diameter (larger including spines)

Diet:
Algae, seaweed, biofilm