My other flower horn is doing quite well in a community tank. I think the red dragon just stressed to much or something else. I did a nitrate test today and it was registering between 30 and 40, a little high on the acceptability so I did a complete carpet clean and about a 60% water change. Fish look a lot happier now, I just wish I would have been able to save the red dragon. It will be a while before I find another one of those local.