The Cerith snail has an elongated spiral shell, this active scavenger can consume large amounts of detritus, uneaten food, fish waste, and algae. Plus, this species of the snail often burrows in your aquarium sand and helps maintain adequate oxygen levels in the substrate. The Cerith Snail does best in larger, well-established reef systems with deep sand beds. This voracious feeder is most active at night. Like other invertebrates, the Cerith Snail is sensitive to high nitrate levels and copper-based medications. It also requires a gradual acclimation process, preferably the drip acclimation method, since it is sensitive to even minute changes in water parameters.