Can anyone help me ID this scare looking thing

[andrew james]

Can anyone tell me what this is? It looks like it has a skull on its back. He's about the size of a quarter. Is it a decorator crab?

 

[CodyRVA]

Spider?

 

[andrew james]

My best guess is a decorator crab/spider. I've been trying to catch him the past 3 nights but he is super fast. Im really worried it's going to make babies and kill all my corals. It's really crazy how these pests get in I take a lot of precautions including dipping coral and quarantining everything before it gets in my system. Obviously I didnt do a good enough job.

 

[GHsaltie]

It does indeed look like a decorator crab. Cool!

 

[nautical_nathaniel]

My money is on decorator crab as well.

 

[andrew james]

I hope to catch him soon. I really want him gone. I'll banish him to the sump along with all my emerald crabs. I've noticed my shrimp disappearing one by one I have 7 at one point and I think there is one fire shrimp left. It may be some of my Wrasses eating my shrimp but Im going to blame the crabs.

 

[Rick Cavanaugh]

Wrasses are to blame for the shrimp. They might even eat the decorator. Decorators will snip off pieces of corals for their shells. Cool Creatures. Sell him to a LFS

 

[andrew james]

Wrasses are to blame for the shrimp. They might even eat the decorator. Decorators will snip off pieces of corals for their shells. Cool Creatures. Sell him to a LFS

Do you know if they like micromussa? I better catch that guy tonight.