Can I also jump on this thread? My 2.5 year old orange glo danio has a crooked spine too. She seems healthy in every respect, although 3 weeks she was very sick along with my other normal zebra danio and my Platys (who have all recovered and are healthy again) due to a Ph drop that I've taken care of. The spine thing has been slowly getting more noticeable in the last month. I'll never buy glo-fish again. When I first bought my 6 glo fish 2.5 years ago, they did not last long, and this final orange one now is the only one that lived so long. She is still feisty and playful, but looks sort of handicapped.