Today I brought home a few mollies for my tank. I was turning the blue light on and checking up on them (they're doing great! ) and realized there's suddenly two tiny snails on my the glass! Their shells don't look anything like my mystery snails.... Could these be pond snails that hitched a ride with the mollies I bought from Petco today? Has this happened to anyone else? I've removed the two snails of varying tiny size to a completely empty 3 gal traditional fish bowl I had laying around with an algae tablet. I'm thinking of putting them in my outdoor 16 gallon trough pond once they get older... Do they even eat algae? I don't want to get an assassin snail.