Small green crab on SPS.

[CableGuy]

Ideas? Im no crab expert but is it some type of a SPS crab or a small emerald?

https://lh3.googleusercontent.com/-7NjQRo3Bck8/Tn_IRfv-PdI/AAAAAAAAA9w/JuRsRAqrEwA/s640/2011-09-25_20-25-02_348.jpg

https://lh5.googleusercontent.com/-tj3jE02URYc/Tn_IiibDoXI/AAAAAAAAA90/MCpMO0A-fU0/s640/2011-09-25_20-25-11_351.jpg

https://lh3.googleusercontent.com/-zbx7xU8fjSo/Tn_Iy7IoZBI/AAAAAAAAA94/FVtBJGBS3XY/s640/2011-09-25_20-25-34_164.jpg

[demonclownfish]

i would say at the very least it isnt an acro crab

[XSiVE]

probably an acro crab.. sometimes harmless, sometimes "fun"

[demonclownfish]

arent acro crabs smooth? that one looks a little rough on the shell

[Heidi]

I agree no keeping that hitchhiker, less you put him in the sump.

Heidi

[MizTanks]

Here ya go. Hope this helps :)
http://www.chucksaddiction.com/hitchcrabs.html

[rosebud161616]

Kind of looks like this guy (Cymo andreossyi):

http://www.mercandunyasi.com/uploads/monthly_05_2010/post-4-1275310199.jpg

Hard to tell for sure without a closer picture of yours. What do you think?

[Sir Patrick]

Looks like a small emerald to me, but I am no expert.