Cool! I’ll keep him in thank youIt’s just a regular bladder snail. Super common! Some people dislike them and remove them. I actually like having them in my tank. However, if you overfeed they will reproduce way more. In my opinion if you don’t overfeed, they help keep the tank clean by eating algae, decaying plant matter, left over food, etc.
If you want to reduce numbers put in a price of blanched lettuce with the lights off and pull it out the next morning. There will be snails on it.