in my 29 gallon tank I have a dalmation molly, a black molly and a silver molly. The dalmation molly is looking a little fatter then when we got it 4 days ago. I wasn't sure if maybe it's just eating to much or is pregnant. and if it is pregnant if it happened before we got it or if it could mate with one of the other mollies in the tank. any suggestions would be nice.