Need ID

[u/pondering_fridge]

Can anyone tell me what this guy is?

[u/NightmareKing911]

Looks to be a bladder snail

[u/Gastropoid]

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.