hey guys, i forgot what kinda snails i bought today, there very small (1/2cm long), and are supposed to be excellent for eating alge, there long cone shaped shells, the picture really sucks but it was the best one i could get, I tried taking 15+ and they all turned out like crap so sorry about the bad picture
They get about 3/4"-1", eat any leftover food and decomposing animal/plant matter, give live birth, and spend most of the day in the gravel/sand, and come out at night (if you see them out in any quantity during the day, epsecially near the aquarium top, it generally signals a water quality problem). They will not eat your plants, and will do an excellent job as detrivores and will keep your gravel stirred and oxygenated.