Quote Originally Posted by Skiploder View Post
Putting unsexed adult ackies together is not a good idea. In fact, putting sexed adult ackies in the same enclosure who have not been raised together is a bad idea. Introduced adult males and females will most often than not - fight.

They are notoriously hard to sex - are you sure that the new one is a female? The everted sexual organs of the males and females look very much alike.
Not sure where you are getting your info from. Ackies will rarely fight. When you introduce new individuals there will sometimes be a bit of a squable with nothing worse that superficial wounds for dominance but rarely ever a full out battle resulting in any serious injury... They certainly do not need to be raised with eachother in order for them to co-exist in a housing unit. I constantly bring new blood into my breeding groups without any serious altercation.

They are also quite easy to sex. Their heads and tail bases are differend and like most Australian dwarf varanids, they have raised scalation on either side of the vent. The scales are different between males and females.