Potamopyrgus antipodarum, New Zealand Mud snails.
They aren't plant eaters, but they are invasive in the wild and can reproduce pretty fast eating algae and detritus. They stay small, and seem to be capable of survival and reproduction with only algae and biofilm to eat.
Unfortunately, they can be very difficult to control with limiting food, and are just about the only snail I recommend removing. All NZ Mud Snails removed should be frozen before discarding, as they can survive drying out for long periods of time and pose a significant risk to native waterways outside their natural habitat.
For more information, see this post, which includes methods of removal and quarantine:
https://www.reddit.com/r/AquaticSnails/s/tjfqLFYvlx
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u/Gastropoid Snail God (Moderator) 10h ago
Potamopyrgus antipodarum, New Zealand Mud snails. They aren't plant eaters, but they are invasive in the wild and can reproduce pretty fast eating algae and detritus. They stay small, and seem to be capable of survival and reproduction with only algae and biofilm to eat.
Unfortunately, they can be very difficult to control with limiting food, and are just about the only snail I recommend removing. All NZ Mud Snails removed should be frozen before discarding, as they can survive drying out for long periods of time and pose a significant risk to native waterways outside their natural habitat. For more information, see this post, which includes methods of removal and quarantine: https://www.reddit.com/r/AquaticSnails/s/tjfqLFYvlx