Algae-Eating Snails: Neritina and Clithon

Taxonomy and Habitat

These snails belong to the family Neritidae. While they are often grouped together in the aquarium trade, taxonomic classification can be complex due to the diversity within the group. They are native to various tropical and subtropical regions, typically inhabiting freshwater streams and rivers, though some species are euryhaline, meaning they can tolerate varying levels of salinity.

Feeding and Water Parameters

These snails are primarily herbivores that feed on biofilms and various types of algae. In established tanks, they usually find sufficient food, but supplementation with algae wafers or blanched vegetables may be necessary if the tank is too clean. They require stable water parameters and benefit from calcium-rich water to maintain healthy shell growth.

Plant Safety and Reproduction

They are completely safe for aquatic plants as they do not consume healthy plant matter. Reproduction is a notable challenge for hobbyists; while they will readily lay small, white, sesame-seed-like eggs on hard surfaces, these eggs typically fail to hatch in pure freshwater. The larvae require brackish conditions to develop, which makes population explosions in home aquariums impossible.