OH NO!!! I hate when this happens...
 

I bought a McCloskers Wrasse about 1.5 months ago, been doing fine... Noticed he wasn't out last night, but I wasn't concerned as I had my hands in the tank so most likely he was hiding... However, today still no fishy.

I hope he is hiding, but I am not getting my hopes high. I don't seem to lose fish, but when I do they just disappear. I do sometimes hear clicking, so I most likely have a bad shrimpy... But I have never seen it, nor will I ever probably as I refuse to tear apart my tank.

If I do have a predator, why can't he take my cheap bicolor chromis, I wan't them to die, as I can't catch them, but they just stick around.

If anyone has a trick to catching mantis or pistol shrimp please let me know... My main tank is 180 gallons so I don't know how to approach this.

But again, I may not have the shrimp in the main tank, it may be in the refuge, as I can't seem to determine where the clicking is coming from and I may go a month or so without even hearing the clicking, but it has been happening for the past couple days.

Any ideas for capture will be greatly appreciated

Wrasses are amazingly adept hiders when they don't want to be seen. I had a lubbock's wrasse that I had all but given up on when he finally decided he was comfortable enough to allow himself to be seen. I think it was around 3 months.

I also all but gave up on my sixline earlier this year and after two months caught a glimpse of him in the sump.

Now the only thing is that the flip side is that wrasses are notorious for jumping.

I also thought of that and have checked, no fish carcaus on the floor that I can see

Did you check the overflow?

yup that is one of the first things I did... not there either.