Aquatic Arts 5 Tiger Eye Nerite Snails (Neritina natalensis - 1/2 to 1 Inch in Diameter) - Live Snails These snails' shells resemble a highly-polished Tiger's Eye stone. These are Nerite Snails, so they absolutely never reproduce in freshwater - great for aquarium hobbyists who don't want snails reproducing in their tanks! Can grow to 1 1/2 inch in diameter, and are totally safe to keep with shrimp, fish, and live plants. Nerite Snails are widely known as one of, if not the most, voracious algae-eaters out of any snail. All Aquatic ArtsTM (formerly InvertObsessionTM) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners!