Can you help to identify?

[cygmark]

Ok so i bought some live rock awhile back and set up my tank, and so on, i found this little crab like the size of a pencil eraser and it was beige with bright orange stripes.

I put him in the tank during cycling and never see him again, fearing after that it could have died, i fed my new fish today and what do you know, he comes out except he's the size of a quarter round, boy's been eating.

So i would post a pick but he runs away when i get close to the tank.
Is it harmful to leave him in there of should i try to remove him?

Josh

[christyf5]

I would get him out of there. Especially if he is growing fast.

[The Grizz]

track it down and yank it out would be your best option.

[cygmark]

hes really quick, any way to lure them out into the open?

[tlo]

tip a tall glass at a 45 degree angle with some food at the bottom. He'll crawl in to get the food, but it is too slippery for him to get out. I would do this at lights out, when he is more comfortable and when the fish are sleeping and wont steal the bait.

[landshark]

Totally agree. I lost about 7-8 fish over an eight month period untill I finally discovered 2 rogue crabs about the size of yours.