Please provide Id on this small snail. I have about 5 in my rrfugium , hope the pic is good enough
it looks like an Oxystele tigrina
Part of the commonly known Winkles or topshells group
all part of the bigger Trochidae family and they are herbivorous. Get them all along Natals coast up to Southern Mozambique.
To confirm, their underside got faint red and white bands, almost like apex corners on racing track.
They are good grassing snails. But they do fall prey to hermits rather easy. Keep them where you got algae growth in your tank. I prefer not to clean the back panel as that provides a lot of feeding area for your snails.