lol im not sugesting bias mate,i keep both types,plus storrs and a few larger types,never had my ackies harm each other,even in groups of 5,storrs ive kept 2 pairs,my first pair the female killed my male,they were agressive at times,my second pr have been mellower with each other than my pr of gillens,mind u my gillens arent aggressive,they used to combat wrestle like male combat,lol,causing me to rethink my assumption they were a pr,but they layed for the first time last season so there obviously a pr,im raising one of the bubs to add to these 2 when its big enough,will see how it goes,i understand your comments on the gillens,they do seem to get along great,,i know people who keep ackies in groups and never have probs,1 guy even kept 3 males and 3 females together,never had aggression issues and they were all added together over time,so not at once,ive also seen and heard of ackies killing each other,not denying it does happen,but like i said i dont think its super common,probably more male/male fighting or maybe a male being to aggressive with a female,if kept right,temps and food wise,they wont feel the need to compete as much though and would get along much better,maybe i have been lucky with my lot,i did lose my female last season to probs with and after egg laying unfortunatly,but i purchased a cheap one in the hope of another female but its also a male,which i introduced to my big male,they get on great,have done for months now,bloody things even try to mate each other at the same time,lol,im in the process of aquiring a trio of alice springs type,so will see how they go