We have had like 10 mollies give or take since the begining of the summer. All have died. Cause of death: UNKNOWN. It's strange they are treated like our other fish, platties, guppies, loaches and cories. They are in the same tank and that is the only fish we have repeatedly lost. I have begun to hate this breed, while my fiance Nick is a hopeless mollie romantic and will never give up. We have only one female mollie that we have had since the start. Just so happens she is the biggest B of them all. So she is in the angel tank until we can find her a better home. She bullies other fish but I don't think that made the other fish die. It never killed the guppies or platties. The fish that die don't look any different, they aren't bloated or missing scales. They are in established tanks with other fish. Help!