That's a Physid snail. They don't do damage, they are actually a good thing to have in a tank. But they can take over. They multiply fast when they have a lot of food, so the way to control their numbers is by restricting their food. Don't over feed the fish as the snails will feed on any uneaten fish food. If you have live plants, remove any dead leaves as the snails will eat them.
I've had these snails in my tanks for years, together with those tiny ramshorns, but their numbers stay low.