What is the best way to catch a Dottie back in a reef tank?

[NMSREEFER]

I made a mistake adding a royal Dottie back to my small reef tank. It is bullying my mandarin and claiming the rocks (and pods) for itself. Does anyone know a quick and easy way to catch and remove it without breaking down the tank.

I set up a diy trap using a 1 liter plastic bottle. The mandarin was the first to check it out. I switched to a smaller bottle with no luck yet

 

[SDguy]

For those types of fish I strap a rock or two to the top of the trap, making it more cave-like for the fish.

 

[solitude127]

If the Dottyback is that aggressive, try a mirror inside a trap.

 

[Jasanden]

Really tiny hook

 

[AdamNC]

A small inverted water bottle trap with a cube of mysis inside of it. Took me less then 5 mins to catch my terror Neon Dottyback and take him to the LFS.

 

[ca1ore]

I caught my splendid using the night ambush technique. I observed where he settled down for the night, waited a few hours, blasted him with a flashlight, and scooped him up easily with the net.