if you have him housed with the female, then I would suggest treating the female also. Especially if she hasn't ever been treated before. She has likely caught some of the parasites from him and it would just be a safe bet to go ahead and treat her the same as you are him. Good luck with the new pair!! I should be getting 2 armata's this week!!! costing a pretty penny though. Ohwell, price you pay to have some of the first here in the states!