Well, to me I think you should consider pumping him up a bit more to the 1000 gm mark in weight. Sure males breed at lower weights. Breeding is instinctual but is prompted by external factors that need adjustments at time to trigger responses. Remember also some females may reject a particular male. Try putting the killer bees freshly shed skin in with the leopard male and the female you are pairing him with and see if that triggers a response. It's the rival male phenomena to stimulate him to become a little more aggressive. Hope this can help. Lol.