Please help to ID this crab

[Richard Chua]

Dear fellow reefers, found this crab strolling beside the acopora. Super fierce! It cling on to my chopstick when I tried to catch it. Is this the good crab or toilet bowl crap? TIA

[Quas111]

Looks like an acro crab. Should be a good guy. He's aggressive cos he's probably protecting the acro colony he "owns". Maybe it would be better if you could take a photo of the colony you saw it with as well. The similar coloration will mean that it probably lives there

[Richard Chua]

Thanks! Have dump his back into the tank but too bad he got blown right to the bottom by the wavemaker. Guess he have got to do some rock climbing to get home.

[Quas111]

I just found the exact crab species while browsing through a hitchhiker guide: http://www.chucksaddiction.com/coral_crabs-1.html

It's also known as the brown guard crab. Hope you find this useful