As stated, its up in the air. I "think" you would have a much better chance at 1 to 1 ratio. But you never know till you try. I have a mated pair(GSM) and had a Female(different tanks), which lived with 1 Occy for a long time. My lone Fem was mean, but never to the Occy, just me LOL. My pair are model citicens and spawn every 3 weeks or so.