Definitely bladder snail. 1 hitchhiked on some plants I got now I have hundreds. They are eating my algae though as I figure out my light.
You can drop in a piece of soft vegetable and the snails will start to eat it and you can pull it out with them still attached to reduce population if needed.
Consistent_Heat_3382 
1) Female 2) Male 3) Snail 4) Fish
Bladder snail
Definitely bladder snail. 1 hitchhiked on some plants I got now I have hundreds. They are eating my algae though as I figure out my light.
You can drop in a piece of soft vegetable and the snails will start to eat it and you can pull it out with them still attached to reduce population if needed.