Coral Hitchhiking Crab ID

[Mr. Fish]

Picked up this coral today and later on discovered this little guy inside. Looks like an acro crab to me, but it's in a birdsnest.

 

[Blown 346]

Really hard to tell. When in doubt move it to the sump.

 

[GerritM]

It´s a Trapezia sp. A Exact ID is with this pic not possible. Generally harmless for the coral.