Oh! Reddit did the thing and only loaded one photo.
Bladder snail. Harmless algae and detritus eaters. Won't eat healthy plants, and only reproduces heavily if you have a lot of dead plants or overfeed your fish. Good at turning algae and detritus into plant fertilizer.
Self fertilizing hermaphrodites, so you only need one to get a nice little colony started to help keep algae under control.
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u/Gastropoid Snail God (Moderator) 2d ago
Can you please get a better picture?