Hi, I have 2 axolotls that are both female, but one is a bit smaller than the other. They are in a 60 gallon tank with a divider in the middle, and I was wondering if now would be a suitable time to put them together, as each one of them has gotten around the divider a few times in the last few months, and they have not shown any aggressiveness toward each other. the larger one is wild type, and the smaller one is lecustic with the glowing green mutation. they are about 3 and a half years old. the smaller one is 6 inches long and the larger one is about 7.25 inches long. the small one is slightly skinnier than she ought to be and the large one is a healthy girth. any feedback would be welcome, thanks!