Some kind of crab

[Bfragale]

I found this in my rocks. I had to tear apart the tank to catch a damsel fish that’s been nipping corals. After weeks of failing to trap him: today i took most the rocks out to catch him. During the process I pulled this guy out: I saw him a few weeks ago. He must have hitched a ride in. I have no idea if he is reef safe or not, but I put him in the refugium just in case. I heard black claws are not good. He’s small and I’ve been watching him for last few weeks. He pretty much just stayed on one rock and picked things off the rock, but he could become a problem so while I had rocks out figured I would pull him as well.

 

[Hemmdog]

I think it’s a normal emerald. I’m not great with crab ID though.

 

[Auquanut]

^^+1^^ Yep. What he said. I've got one that I see about every couple of weeks. He's been in the tank for ever. Every time I'm sure he must be dead, he shows back up. This guy is HUGE!

 

[Bfragale]

I have an emerald and this one looks different. Could it Be something else?

 

[flsalty]

I think that's a xanthid crab, but unsure of the species. Good idea putting him in the sump.

 

[Bfragale]

I think that's a xanthid crab, but unsure of the species. Good idea putting him in the sump.

Thank you !

 

[Dragon52]

Whole bunch of Pics to verify.

emerald crab pictures - Google Search

www.google.com

 

[Brad Waddell Wrath's Reef]

Emerald crabs have hairy legs and are more of a green color.

 

[Bfragale]

Yeah this does not have Harry legs, no green more brown and tan colors and black claws

 

[Bfragale]

But here’s my new rock scape after I destroyed it to get the damsel...

 

[vetteguy53081]

Emerald crab. Not all are green and hairy.
Here's one:

 

[bigdrew]

Looks like a gorilla crab to me. If so, not coral safe.

 

[heniochus]

Looks more like a gorilla crab to me. Did not a emerald.

 

[Gareth elliott]

+1 to xanthid sp. carapace shape is dissimilar to
Mithraculus sp.

 

[Bfragale]

Thanks everyone! Glad I put it in the sump lol