We bought him and his "sister" together as male and female, and she was clearly female, but I'm beginning to be unsure of him. He NEVER displays any of the typical female colors, even when he's mad, and my camera doesn't really show his other colors either. That being said, I still argue with myself about it every day! Haha. No, I haven't had him tested or anything. Maybe I will look into it. He is a super healthy guy otherwise.