Looks like bad news to me. Sump king? @ISpeakForTheSeas have you seen this one before?
Sump lord is my vote also
flakbait
New Member
yeah he’ll most definitely have to be sumped sadly. I found this old forum post with the exact same crab as mine.
Wish it was safe, looks cool
orange crab ID
Hey everybody, I've had this crab in my LR since 2005 and i only just caught him the other day and I can't find a pic or description of him anywhere on the net so i thought I'd ask you guys. Here's the pic over the years i have had a couple of fish disappear and some corals get "bite" marks and t...
www.nano-reef.com
Sustainable crab claw meat. Wish I had a sump full of these guys.
I haven't seen one like this before. It doesn't look like a stone crab (Menippe sp.) or a Xanthid crab to me, as the eyes are too far apart. My best guess is a Pilumnid crab (these used to be considered in the Xanthoidea superfamily, so they could be considered gorilla crabs), but I'm not entirely sure.
Regardless, it's definitely not one I would trust to be reef safe. So, yeah, I'd sump it, and -as mentioned above - I'd make sure that it can't get at anything important (like wires) in the sump.
I have a couple of these run around inside my rock. They never venture out. So far I find them to be no problem
flakbait
New Member
I believe he is responsible for the disappearance of my fire work clove polyps. They were doing fine one day, then just disappeared the next. Crabs will be crabs I suppose, thanks for the help. 
I see molts or shell. Not sure if dispatched or molt but crab never seem to get bigger
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