well according to everyone on this site all goldfish need ungodly-sized tanks. everyone's gonna have a heart attack when I say this but I kept 3 goldfish in a 10g tank for four years and they seemed okay to me. I know better now and I realize that I was obviously overstocked but my water quality was always good. the fish never grew of course, but I had always heard that goldfish grew to the size of their tanks and that is certainly what mine did. So anyway, after reading what people on this site are always saying about tank size and goldfish, I looked up a bunch of goldfish websites. One said 30g per fish and the rest of them said 10g per fish. I'm not saying that you're right or that they are, was just curious as to if anyone wanted to comment. What are your thoughts?