Horned Nerite Snails are a tropical freshwater species of aquarium snail. They are easily identified by the multiple dark horns that protrude from their shell. The shell is yellow in color with thick black swirls along the edge. They are popular algae eaters and debris removers. Most notably they will keep your glass crystal clear. They are available to purchase at most LFS or from other hobbyists. Horned Nerite Snails are popular and pricier than other snails because they are impossible to breed in freshwater. Nerite snails can grow up to 1″ but adults are more commonly found between 1/2 and 3/4″ in size. Horned Nerite Snails are the smallest and grow up to 1/2″.