I was wondering whether one of my male betas can be kept together with a female for breeding. The biggest one is little bit lazy and it doesn't even eat Brine Shrimps I give as food. Where as my second biggest one even spread its fins when I come near by and swallow a whole fairy shirmp which is almost 2 inches long. And my smallest Crown tail seems to be very young and calm sitting always in corner. I've put the Crown tail and the biggest one together and they don't even notice each other. All of them has their own bubble nest. Which one(s) should I breed??