Birdsnest Crab ID

[FindingNem0]

I picked up a birdsnest a few days ago and notice there was 2 hitch hiking crabs in the middle. I've been watching them and I dont think they're hurting the coral, they do seem to defend it everytime my cleaner shrimp goes near it.

 

[FindingNem0]

Photo attached

 

[TexasTodd]

hard to tell but looks like an acro crab, which is fine.

 

[KJ]

Tetralia cymodoce or Trapezia serenei.

 

[FindingNem0]

Tetralia cymodoce or Trapezia serenei.

Thanks. That's the one !!!

 

[KJ]

Thanks. That's the one !!!

YW

 

[FindingNem0]

Can anyone ID this hitchhiking crab for me, his sitting in my sump.