Genus
Common name: Sea Urchin
Scientific name: Echinus
Echinus is a genus of sea urchins in the family Echinidae known for their robust, often colorful spines. They are important grazers in the reef environment, controlling algae growth. In the aquarium, they require stable water conditions and plenty of live rock to graze on. They are generally peaceful but can damage corals if not well-fed with algae. Their fascinating spherical shape and movement patterns can add interest to a reef tank.