Crab ID Please

[Scooter12ga]

Hey everyone,

I've seen this guy hiding out inside holes in one of my rocks for weeks but could never get a good eye on him. The other night after lights out I finally caught him out and about. He's currently living in a mason jar in my sump for the time being.

He's pretty small, about 0.75"x0.5"x0.25", and very skittish. He tightens up into a little 'rock' whenever disturbed. He has short legs and can easily be mistaken for a piece of rock rubble. Colors in the photo are accurate. I figure he's not safe for the main tank being a true crab, but is he safe to set free in the fuge, or shall he live between baffles or in the skimmer section for the rest of eternity?

Thanks!

http://vtx.homeip.net/images/SaltTank/RC/CrabID.jpg

[Blown 346]

Good thing you got him out, I had one just like this but was the size of a half dollar. He ate and killed over $150 worth of fish, shrimp etc.

He is from the Mithrax Family I believe, I would keep him in the fuge.

[Paintbug]

Psaumis cavipes maybe ;). its an Xanthid crab for sure. they are usually very distructive. the sump would make a great home . http://decapoda.free.fr/illustration.php?n=1&sp=681

i think LeslieH here on RC has a friend thats looking for some crabs to do some research on. nothing wrong in donating it for science :D.