Unknown Crab

[physicsdude]

Hi all! Today I visited the lfs and saw an unusual invert hiding in the corner of one of the sw tanks...he was a crab with a completely cream colored body, but he had 4-5 lines of brown spots on his back...it had a bulky body with small limbs and claws...they called him a "peek-a-boo" crab; truly, that seems a very non-descript name so I was hoping someone could help identify him...also, he had dark brown eyes and was close to 2" in diameter....I hope this is enough info for some ID...Thanks again!

 

[oyf709]

a pic could help as usual, however even with pic, crabs are very hard to ID since there are too many of them, the only thing concern will be if they are harmful to ur tank or not. =)
maybe off topic but yeah..

 

[DragonForce]

sounds like a type of porcelain crab.