Kevin, I am no leachie expert but I do have some and breed them. I have not had too much trouble pairing up the smaller island morphs. If your male and female are both adults and setup in a cage large enough so they have multiple hides and can get out of each others way they will be much better off. Watch them carefully and see if they share a hide. If you see wounds or bite marks separate them and try again later. Feed them well before introducing them and you may want to try cooling them for a while prior to introduction. Like I said I am no Leachie expert but my smaller island types have not had too much trouble pairing up. The GT's are a little harder. Good luck! How old are they? Tom