Long time reader, first time poster.
I got some strange snails in a Lillaeopsis plant from Tropica. Before the chlorine treatment, I removed them to a tiny tank to better observe them.
I have had no luck with species identification, googling like crazy, any help in identifying them will be greatly appreciated.
They must, like ramshorns, belong in the Planorbidae family, as their shell is a flat spiral. But unlike all the Planorbidae pictures I have found, they do not
keep their shell perpendicular
to the substrate, but parallel to it
. They are fairly small, about 2.5 mm diameter, with transparent milky shells, and a very dark blue-gray mantle, and the shell's spiral does not decay as much as in a ramshorn's.
I have included a drawing in an effort to make this clearer. I am sorry I do not own a digital camera.
Thank you in advance.
And in completly unrelated news: After a lightbulb change and 8 hours DIY CO2, my plants have started pearling. I am so very happy.