The live Assiminea succinea I brought back from Florida at the end of March are doing well and, in fact, have been making baby snails in their own images (but see below).
This undoubtedly newly hatched snail, just about 0.4 mm wide and 0.26 mm high, was near the limit of magnification of my camera. Being wider than they are high, the babies are actually not quite the images of their parents, which have tall shells. Soon, the body whorl of the baby snail must take a downward turn and start growing a more elongated shell.
The previous posts on A. succinea were here and here.