Crab ID - Hitchhiker from Live Rock

[ExpensiveSushi]

Howdy fam - can you help me ID this guy? He's got quite the camouflage. Came with the live rock I got from TBS a few weeks ago. Thanks!

 

[Uncle99]

A decorated crab?
Or crab in ghille suit….

 

[Anemone_Fanatic]

Decorator crab. They're variably reef safe, but generally they won't do too much damage. They take bits of material and attach them to tiny velco-like hooks on their shell in order to form a sort of "crab ghillie suit". Sometimes they might snip off a bit of coral to add to their shell, but not enough to do harm to anything bigger than a few polyps.

 

[jabberwock]

Yep, as stated above.

 

[ExpensiveSushi]

Thanks all. Looks like I'll have to keep an eye on him. Its a 3gal pico that I assume he'll outgrow.