Aquatic Arts 5 Live Assassin Snails (Clea helena - 1/2 to 1 Inch) - Removes All Pest Snails Removes all pest snails including pond snails, bladder snails, ramshorn snails, Malaysian trumpet snails (MTS), and more. Beautiful black and yellow coloration. Will not attack anything but snails - safe to keep with shrimp, fish, live plants, etc. These snails burrow themselves in the substrate to clean up waste. All Aquatic ArtsTM (formerly InvertObsessionTM) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners!