Tang Gang set to Shred, how to remove sailfin, seeking suggestions

[Orion9]

I added a sailfin tang to my 210g after two weeks of QT and acclimation box time.

My formerly peaceful tangs(4), who showed no previous attention to the fish, went into shred mode and trying to kill it. I've been unable to trap or net for two days and looking for removal method suggestions.

Its currently hiding in the corner of a 210g, avoids nets, and leaves its hiding spot when anything is moved, usually causing the other gangs to attack.

I'd appreciate any recommendations!

 

[exnisstech]

It's not always easy depending on where they sleep but I've been able to net a few by blinding then with a flashlight late at night then scooping or grabbing them up.

 

[Orion9]

I will give that a try, thanks for the suggestion!

 

[Troylee]

Put some mirrors on the tank they will figure it out!

 

[hrdneglcry]

You could try a powerhead / wave maker to cut down on aggression. Sometimes I've found an air stone can help. Beyond that you can try to catch him at night when they are asleep.