Snail ID

[DrNic]

I went down to Petco a few days ago and saw these snails all over a few of their tanks. They looked interesting but I didn't know what kind they were or if they might be harmful to fish.

Can anyone ID these little guys? Sorry for the somewhat bad photo it was as good as I could get with my phone.

[Abbeys_Mom]

I think they are MTS
Malasian trumpet snails
Not harmful to fish, great for tanks with sand.