I had three at first, 1 male and 2 females. No breeding activities at all. I then added three more, 1 male and 2 females. Still no breeding activities. After about 3 months the original male paired up with a female. They finally laid eggs a couple of months later. After that he paired up with a different female and he's been with her ever since. The other male has never paired up yet with the other females. I was really expecting him to pick a mate?