Actually I setup a couple colonies of mice today...figuring I would give it a try...since I need the pinkies. I don't know what's going on...it seems like all the mice are fighting. I have them set up in 1:3 ratio. In a 18"x24" tubs with wire tops and an homemade automatic water system. There is plenty of room, can anyone explain the "fighting." I don't know what they are doing..any insight will help.

