Evil Crab!

[jasonoconnell]

Hey guys, I was just tank gazing as normal and noticed a cleaner shrimp moving about unusually. Attached to him and munching away quite merrily was this big black crab! I have no idea where he came from, and have not seen it before- a rather unpleasant hitchhiker. It looked almost tarantula like, I would say had a hairy like shell with a series of dots on it and other than that was completely black.

Any idea what this is? I just need to know whether to catch him to keep safe the coral/fish community!

Also, any advice on how to catch it would be appreciated.

Thanks

 

[ccCapt]

Attached to him and munching away quite merrily was this big black crab!

Doesn't sound like a good crab.
Banish him to your sump if you have one.

 

[Kurt_Nelson]

Or your backyard!

 

[jasonoconnell]

Managed to get him out, hidden in a piece of rock. Got a pic (hopefully this will attach ok)....

Not as black or as sinister looking as first thought, but still like to know what he is....