Reef safe crab

[xmiles213x]

Im doing my regular routine check on my tank and find this. I've had this tank over a year and never seen him before so is he reef safe or not? I took him out

 

[Blue Ocean Aquariums]

That looks a Emerald Crab to me. Good at eating various types of Algae especially Bubble


Sent from my iPhone using Tapatalk

 

[xmiles213x]

That looks a Emerald Crab to me. Good at eating various types of Algae especially Bubble


Sent from my iPhone using Tapatalk

Aren't emeralds greenish this guy look brown and hairy

 

[jessesoto33]

not an Emerald Crab looks more like an acro crab harmless. Also if you had him in your tank thus far and nothing died yet

 

[bigpaul]

Kinda looks like a gorilla crab.

 

[Reefer6]

I think its a gorilla crab; a pest. Acro crabs are typically smooth bodied http://www.liveaquaria.com/product/prod_display.cfm?c=497+501+2914&pcatid=2914. Its been a while since Ive got a colony with a gorilla crab but from what I remember if it's hairy, has blue or red eyes and black pinchers then its a pest crab. I'm not sure if they harm anything other than acros.