Wonderful, Saltirepride. Here's a pic of one of our boys. Sorry about the quality. We had three too. All boys. Great pets. I can only find a pic of one of them. This is Basil, the other two were Dr Dawson and Fidget. We all loved them, even the cat. She would spend hours in front of their tank watching them. When we were moving house she was found in the top of the tank. We reckon she thought they were packed and didn't want to be left behind. They only cost a fiver each but lots more in vet's bills and worth every penny.
Loads of memories of them but I won't ramble on.
Incidentally, do you know that rats can get pregnant about 5 or 6 weeks old? You might want to consider separating them unless you want to have more. It would be a shame to keep one on its own though. They are very sociable animals.
Dee