LeighMo wrote:
How big are they? And are you sure they are mature?

Can't tell about mature (though they did lay some eggs) but they are about
1" across.

They sound like they might be "columbian" ramshorns -- the ones that get to be
1" or more across. Columbian ramshorns usually have pretty striped shells.
And they do eat plants.

Yes they do. They're now sitting in a pitcher with tank water waiting for the
lfs to open at noon.

--
Victor M. Martinez

http://www.che.utexas.edu/~martiv