I have 3 females to a tub and I have a male that is 350g and one that is a little over 200g. I alternate males and tubs (so tub2 has male 1 in it for the first week and then tub 3 has male 2 in it the next and so on through tub 7...Tub 1 is for the male that is not breeding for the week). ANYWAY, I put male 2 into tub 3 and 2 of the females got pretty aggressive with dude today... I think those 2 might be pregnant because they were paired with male 1 a couple weeks ago for about a week while I was building the rack. They never seemed interested and everytime I went in to check on them they were always sleeping and usually seperated from the male. Now they look all fat and were being very aggressive toward the guy. Is this because they are pregnant or is it because he is still a little smaller than them? The girls are around 240g and I introduced home boy a couple days ago but noticed their attitude toward him today when I was checking water and food...