Ive had the tank(10gal) about 2 months now. I originally got 1 male dalmation molly, 1 red tailed tetra, and 1 female balloon molly. I waited about a month and introduced 4 more fish. (another tetra, 1 male&1 female balloon molly and male dalmation molly) .. a few days later, the first female balloon molly i purchased died. (not until this that i realized the male to female ratio was too high) so she was probably stressed and died. so i got about 4 more mollies a few days later. 2 female dalmation mollies, and 2 female balloon mollies. it's been about two weeks since then. and today i get home from work and find the 2 female balloon mollies are dead. i don't get it. all the female BALLOON mollies i've bought have died... all the other female fish are fine. am i doing something wrong? or is it something particular with balloon mollies ... please help