Look like trapdoor snail's too me. I've kept them before.
55 gallon elephant nose tank.
30 gallon borara merah and brigittae, shrimp and snails
70 gallon elephant nose tank, Gonzo the elephant nose and friends!
30gallon borara merah and brigittae green, red longfin bristlenose, shrimp, ninja, taiwan,bamboo, and snails.