How long to leave a mirror up?

[Jesterrace]

Okay, so I recently added a Lyretail Anthias and for the most part things are going well, but my Coral Beauty hasn't been to thrilled with the add. For the most part it leaves the Anthias alone but it gets really PO'ed when the Anthias attempts to rest in it's established cave network. I put a mirror up in an attempt to calm things down a bit but for the most part the CB leaves it alone but my Melanurus Wrasse is obsessed with it and has been going at it for a few days now. So the question stands, how long should I leave the mirror up (been in place for about 3-4 days). On the bright side the CB seems to be gradually easing up on the Lyretail and the Anthias is now parking it's butt in an area where the CB doesn't really rest. Honestly this shouldn't be surprising since it's the first new fish I have added since August of last year.

 

[Murica]

If the wrasse isn’t the aggressor with the other fish then you can take it down wherever. If he is, my purple tang was a jerk.. left it up for about 2 weeks until he finally calmed down.

 

[Jesterrace]

If the wrasse isn’t the aggressor with the other fish then you can take it down wherever. If he is, my purple tang was a jerk.. left it up for about 2 weeks until he finally calmed down.

My Melanurus Wrasse has been somewhat of a jerk to my Blue Star Leopard Wrasse, so I figured it might be helpful. He still really goes for it.