They are masters at not getting caught
Here is what i did..
They sleep in one spot every night.
When the lights go off and they go to their home take the rock out of the water
They dont know whats going on for the most part until there is no water
Now if said fish sleeps in the corner on the bottom same deal. This time slowly put a net in front of them and then they only have one direction to go.. into the net
Lolwell, there is the right way and the wrong way of doing things. now, the wrong way was putting such an aggressive fish in the tank in the first place. but, most of us have done this or something along these lines.
so now were onto the right way to get said fish out of the tank. my way is pretty simple, costs about a buck and is a sure fix to the damnsel. simple, sweet and quick theres no better way to get right of a damnsel than to remove all other fish from the tank, remove all coral and rock, fire up the grill, remove all water from the tank. scoop up the now flopping around damnsel, then toss it on the grill. while its chilling on the grill (don't worry, even this wont kill the *******) replace the water (good time for a 100% water change if you ask me) replace the rock, place the fish back in the tank and place all other live stock back in the tank. by now your damnsel should be nice and made because lets face it, not even the fires of hell can kill a damnsel, so be careful when you get it off the grill, then place it in a blender and make home made fishfood out of it. now, the fish it was picking on can laugh and enjoy eating the bully fish.
Hey so I just wanted to say thanks I was trying to do something like it and after reading your post and trying again it worked like a charm. I used a large clear Jar along the normal swim path if I put a net near him and he went towards the jar but noticed it last second and he would dodge around it. He did this twice that way so I moved the jar's opening to cover the new path he was using and he went straight in. I was almost sure I was going to have to pull the tank apart to capture the little devil. I didn't want to do that for sure or stress anything else waving a net around for hours so I checked on here and your advice was great! It happened to be a Black and Gold Chromis terrorizing the tank. Just as soon as he was caught the other fish all went back to normal behavior swimming freely and at peace.After chasing a damsel around my tank with a net for days, this worked for me in a matter of minutes. Get a tall, clear glass, place in tank, get all air out of it (so is as invisible as possible) and position it on a rock or on the sand horizontally. Use your net to chase the damsel into the glass. Remove glass and damsel. I was ready to try a small hook or to just give up and I found this advice from someone and was pleasantly surprised. My damsel would swim away from my net consistently along the same few "paths"... so I placed my glass along one of those paths and the damsel went back to LFS.