I'm going to keep all the girls, and put them in the tank with the younger male and female (Triscuit and Cookie). I wont keep the males, though. I don't have anywhere to put them, and I'd have to buy a separete cage for each of them. And then I'd have to buy girlfriends for them so they won't get lonely. But the girls I can just put in with the other two, so I'll keep them.