What kind of snail is this? They were present in my 20 gallon long until I needed to treat the tank for worms with flubenzadole and all the snails died…..or so I thought. Now the little guys are coming back.
It's one of the snails with several common names - pond snails, tadpole snails, bladder snails or just 'pest' snails. I think it's a physid snail for the way it appears to curve in the photo. You can see it in real life to compare to the diagrams here
(Thread rework in progress - please pardon our dust!) Freshwater Snail Species In The Hobby (Two Clea helena assassin snails and a Planorbid ramshorn - photo by CassCats) Index Basic Terminology for Identification Physidae: Bladder Snails and Tadpole Snails Lymnaeidae: Pond Snails...