Nassarius Snails

[Suzzie]

I have 3 Nassarius snails in my aquarium.

Over the last few days I have noticed at least 4 tiny snails which I didn’t put in the tank - these look like mini-Nassarius snails.

Is it possible that my original snails have bred?

 

[Coralreefer1]

Possibly Stomatella snails

 

[Suzzie]

Thank you for your reply.
The snails in my tank have a shell and are out during the day but aren’t digging into the substrate - yet.

Would this still make them stomatella snails?