Genus
Common name: Bristletooth
Scientific name: Echinothrix
Echinothrix is a genus of sea urchins in the family Diadematidae, known for their long, slender spines that can be venomous. These urchins are nocturnal and often hide in crevices during the day. In reef aquariums, they can serve as a natural form of algae control, grazing on various types of nuisance algae. However, their venomous spines mean they should be handled with care. They are generally reef-safe but may inadvertently damage more delicate corals with their spines.