Emerald crab or something worse?

[FlashPro]

I found this guy in my tank last week climbing around a pagoda. I got a little nervous because he is pretty big and not exactly how I remember emeralds. Very hair and the claws don't quite seem the same. I put him in my sump for now.

 

[T Man]

ugly huh?

ugly huh?

Howdy FlashPro, yes that is an emerald aka mithrax crab. I've had them in the past, they are an opportunistic scavenger that if not happy with what the reef has to offer....will pick at corals and fish! it's commonly known as "reef safe", but I'd say 120 gallon at least . Unless...it gets feed daily/weekly.

Welcome to Reef Central FlashPro!! T

 

[plateboy3293]

It killed my 7 in plate coral. I would get rid of it or feed it to a trigger