Don't put your prego females in with the new male cuz technically if they smell another male and/or believe he has stronger genes than the fella that got her pregnant in the first place she will kill her kids and quite possibly the new male will kill the kids cuz they are not his but you will prolly take her out when she is fat. I have 2 or 3 females that are bigger than my male and he lets them know he's getting some one way or another After your female has had 2 litters she might be as big as your male Tim but it may take 3 litters but they get big especially after the first litter. I would throw your females in the new male unless you definately know they are pregnant. Tim I have one black female mouse that once put in the 10 gallon and the other heifers and her pimp Money Mike of course-any other females I add in from that point she will beat 'em up so I have to take her out for a few days until the new one has settled in but this girl is ruthless. Fighting for her man or something but it's okay he sleeping with the 4 other females in the tank but all in all could make for a great Maury show

Bob

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