I need to borrow a crab trap

[Din Gior]

Thanks Ian for the trap. I think I'm dealing with mantis shrimp and don't think it can go through the bottleneck. I also tried a cup method, but no success, I don't think it ever climb on rocks and I'm pretty sure this thing live in the sand bed under rocks.
I will post my progress here.

[Slyguy00]

Iv had great success with bottle traps. Worked everytime for me. And usually within 30 minutes of lights going out.

[input80]

You're welcome Alex, hope it works well.