Right now I have 4 males and 3 females, so I am wanting to get more females, but only have so much space. The pastel was a trade, I wasn't sure If I was going to keep him when I got him, so now that I know he is eating well and has a bit more weight on him, I am trying to decide if he would be an benefit to my group or if a female would be better. I am thinking a female might be better. Thanks.