The Devil's Thorn (Faunus Ater) snail won't overrun your aquarium as they reproduce in brackish water only. They are very similar to Malaysian Trumpet Snails. They are very active lovely snails to keep. These snail is naturally found in the Western Indo-Pacific region, where it inhabits a wide range of islands. It can be found in all types of waters, including estuaries which can range from fully freshwater to mid-end brackish. They grow to a maximum size of around 8-9 cm.
Clea helena or Anentome helena