new stowaway ?

[golden69_ca]

i was watching my tank tonight when i noticed a black and white hairy leg. i dont remember bying any thing of such so i coaked it out with some food . it is some type of crab body is a little larger than a tooney and its claws are as wide as your pinkey nail and 1/2 inch long and when the claws are open i noticed that insteed of flat they were more like a deep soup ladel . any ideas . going to get a digital camera soon to take pics its a must.

thanx