Can someone ID this hitch hiker?

[Sumfingwong]

Ok, so I have seperated 2 pieces of LR where I saw the crabs. It looks like the fan crabs have moved to another rock. I for sure caught the black and mantis ( i heard it ) but im not sure about the borwn gorilla crab. Those crabs are a PITA. I caught the black one with chopsticks and moved him into a plastic container used to seperate betas (its clear and hangs on the side of tanks) I guess the plastic wasnt smooth enought, because it crawled straight up and opened the top door to the container and escaped!

What is the best way to catch the mantis? I have the X-Terminator mantis trap in that rubbermaid as well.

I have read this, and it wasnt successful

http://www.mantisshrimps.co.uk/articles/removal.php

thanks all