Genus
Common name: Pencil Urchin
Scientific name: Phyllacanthus
Phyllacanthus is a genus of sea urchins commonly known as Pencil Urchins. They are characterized by their thick, blunt spines that resemble pencils, which provide protection and deter predators. These urchins are found in various marine environments and are known for their role in the ecosystem as algae grazers, helping to control algae growth on the reef. In the aquarium, they can be beneficial for algae control but require ample rockwork to hide and graze upon. They are generally peaceful and can coexist with a variety of tank mates.
