The article told me everything except the one thing I need to know and that is how long does/can a Celestial Eye/Choten gan Goldfish live? I have had mine, Barney, about 2 years now, he/she has tripled in size and needs a bigger tank, I have a 2 gallon tank now and as awful as it sounds I don't want to go through the expense of buying a bigger tank if they don't live much longer. I need to know how big they get as well so I don't have to buy another tank again. I had to give up the Koi I had cause I didn't know how big they got, I had 7 I bought at 2" to 3" and they got 8" to 11". I almost fainted when I found out how long they live and how big they get. Thank You in advance, BJ Burger