OMG I'm so glad that I found this thread!!! I want to get a bubble eye goldfish. I've read that they actually do better as loners since their eyes are so delicate. I want to do the best that I can in taking care of this fish, so please let me know what I need to do that is abnormal from other goldfish.
I see that they grow from 6 to 8 inches in length...so will a 20 gallon be okay if it's just the one fish? People always say 10 gallons per extra goldfish....so could I even get away with 10 gallons if it's just the one goldfish? I plan to use sand as substrate. No decorations would be best so it doesn't poke it's eye sac, right?
most people do just bare-glass enclosures for bubble eyes...even sand particles can damage them. i've heard of tying silk handkerchiefs to the hood and letting them flow in the water for decoration, but those eyes are just SO delicate anything else might be a danger.
as for tank size, 20 gallons is a minimum for adult goldfish. you might get away with 10 for the first six months or so, but after that point you'll be doing so many water changes you'll throw up your hands, shout many, many words that can't be posted on a family-friendly forum, and shell out the $75 or so to get him that 20 gallon tank.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger-all down here on Earth.
Loki/Grendel/Gail/Beowulf/Camilla/River/Bathory/Arwen/Lafayette/Deb/Jack Skellington (soon)