I bought her at the same time as a flame anglefish. The flame got sick, was QT'd, recovered, re introduced and then harrassed to death by Sacha... Talk about beautiful but deadly!
I decided that if I put the yellow in the QT she's get disoriented and I would have a better chance of them adjusting in the main. They already seem to tolerate each other...although the Blue is being rather shy most of the time... It was only last night though since I got him. 2 weeks if no problems and on to the main tank!