I agree they are. I want more girls. I started out loving boys but since Nix I really love my girls now. I figured I would, I loved my female mice so much but i still enjoy my boy a lot. I am also loving my rescue guy, he's just a total clownfish xD
I'll have to say if I wasn't so set on breeding mice I would breed betta. Not sure if I will have time for both ever, breeding any animal is expensive and I know it's taken me YEARS just to learn mouse genetics, proper care, and conformation. It would be scary to have a mouse litter and betta spawn at the same time, so so much work.