I caught this hitchhiker crab several months ago using a pickle jar trap. Saw it one night eating my leather, so I knew it had to go. Not sure what type it is, but it was evil (as you can tell from those eyes).

Some kind of little majid crab, related to emerald crabs and spider crabs. Almost looks like a decorator. It may be OK, maybe not.kay-bee said:I noticed this climbing up some live rock last night. Any idea what this crab or crab-like creature is? (resolution is poor but perhaps the shape of its carapace offers clues)
Very cool. I have never seen anything like it.i got some weird worm stuck in my filter, and when i touched it, it flashed flourecent blue down its body