Snail identification

[Error3343]

Might just be paranoid but are these little snails ok in a tank, im new to the hoby and just want tocmake sure there safe for my fish.

 

[Error3343]

Thinking it's some sort of limpet, just introduced hermits so might of come off of there shells?

 

[kdx7214]

Might just be paranoid but are these little snails ok in a tank, im new to the hoby and just want tocmake sure there safe for my fish.

The picture didn't come through for some reason, so it would be hard to say.

 

[Gumbies R Us]

Not seeing the picture on my end either