A very hardy small snail that is excellent at keeping the crevasses of your tank and decorations clean of algae. These snails require almost no attention while doing the maintenance of your tank. Other snails and cleaners cannot get into the spaces these little guys will clean. Without these you can risk build up of ammonia and other chemicals from the cracks that they eat from.
These are really good size cleaner snails, close to 1 inch in size