The Het. Ebony is about 1.5 years. The Pink White is about 3 years. The other std grey female has been adopted by my friend. I have placed them in seperate cages for bout 3 days when i first got them. Forgot to mention. The thing is the pink white and Het. Ebony do get along most of the time. Its just occasionally under the following scenarios where the Pink White do get aggressive. And even then, the fighting is only for a few seconds. I believe it happens when the Het. Ebony makes sudden movement.

1) When I open the cage for them to come out during playtime. Only the Het. Ebony male will come out and run around the room while the Pink White will not budge but stay on the litter pan. When the Het. Ebony male returns into the cage, the Pink White female will chase the Het. Ebony male and bite his fur.

2) When the Het. Ebony male jumps down from the upper platform after spending some time in the upper decks to eat, the Pink White who is at the lowest platform on the Litter Pan or at the dark corner will chase and bite his fur.