Nerite Snail

About

The nerite snail (Neritina natalensis) is one of the most practical additions you can make to a freshwater planted or community tank, and not just because it's a tireless algae grazer. What really sets it apart from most freshwater snails is that it simply will not reproduce in your aquarium. Females do deposit small, sesame-seed-like eggs on hard surfaces, and you'll probably find them on your glass, driftwood, and décor, but those eggs won't hatch in freshwater. The larvae require brackish or marine conditions to develop properly, using the salinity to build their shells in the earliest stages of life. So while the eggs can be a minor cosmetic annoyance, a nerite population stays exactly as large as you make it. In the wild, these snails come from the coastal regions of East Africa, including Kenya and Mozambique, where they move between freshwater and brackish habitats. Shell patterning varies quite a bit, ranging from bold black-and-yellow zebra stripes to more muted tiger-like markings. They're peaceful, completely reef-safe with plants, and well-suited to beginners. One thing to watch: nerites are escape artists, so a tight-fitting lid is worth the effort.