Genus
Common name: Green Sea Urchin
Scientific name: Psammechinus
Psammechinus, commonly known as the Green Sea Urchin, is a genus of sea urchins in the family Parechinidae. These urchins are characterized by their small size and distinctive greenish coloration. They are often found in shallow waters, grazing on algae and detritus. In the reef aquarium, they can serve as a natural form of algae control. Hobbyists should provide ample rockwork and hiding places, as well as ensure a stable environment with consistent water parameters. Psammechinus species are generally hardy and can be beneficial for maintaining a clean and healthy aquarium ecosystem.