Could anyone identify please

[Mr New Saltwater]

I found this little guy on a Elegance coral i recently purchased. I would love to find out what it is and if it is harmful to corals.

 

[CodyRVA]

following.

 

[Lionfish Lair]

It's a Cryptochiridae. A Coral Gall Crab. They perhaps irritate the coral a little with it's shenanigans, as it now lives in a hole in the coral skeleton.

 

[Mr New Saltwater]

Thanks for the info. Appreciate it!

 

[ihavecrabs]

Looks like an awesome specimen. I love the diversity of out reef tanks!