One of my adult female T. natans has died. I have maintained this group for the last four years when I received them as (presumably wild caught) adults. She appeared to be pregnant and from her behavior was in some difficulty with bloody marks around the cloaca for the last few days. The last loss I had was an adult female which died one day after giving birth to one stillborn and one live youngster (now adult). The problem appears to be related to pregnancy/birth. Any suggestions?