Hi! I recently brought home a goldfish (his name is Franklin ) that has been at my mother's for the past 6 years. He was originally won at a state fair and I was trying to figure out what breed of goldfish he is. Can anyone offer some help? Currently he is in a much too small 10 gallon tank, I am about to buy a 50 gallon tank and start the transition into a bigger space for him. Also, I wanted to buy one additional goldfish to add to his tank once he is in a bigger space. Is it ideal to keep like breeds together? Thanks in advance!