My Betta (see avatar and album) was all one color, in fact he was mostly a non color. But a few weeks ago he started getting bluish grey spots and marks on his tail and red stripes on his anal fin and what looks like a red rash all over the top of his head. I've been assured it's just marbaling. I was very surprised because one, I'd never heard of marbaling, and two he's fairly big and I would not consider him young. So I thought if he was going to change color he would have already done that. He was labeled "Opalesque" and really was all one color.
Last edited by Greylady; 08-04-2012 at 05:18 AM.