Uh, lineatus is back in QT again. Was good for a few days, but then got the upper hand on the pintail and it went downhill from there. Guess it's time to rehome it...
How long did you keep him in time out? The last time I had to do this I left the aggressor in my QT for 6 or 7 weeks. I would hate for you to have to part with such a beautiful fish! Where do you live?