Well, I separated Mika and Afton, regardless of the sex outcome. Mika is all plump and stocky, with a thick tail, and Afton is obviously thinner and looks scrawny in comparison. So, if nothing else, I need to fatten up Afton. I put her into a five gallon inside the 55 gallon (I am short on heat sources and it was the best I could come up with on short notice) and I hope to figure out a way to divide the bigger tank this weekend. So far, Afton has already eaten more than she has in the past two days, and doesn't much care about the smaller size. I still feel guilty......