What is this???

[raccioppi83]

This is the best picture I could get.. it came on one of my corals

 

[raccioppi83]

I also can't seem to figure out what kind of crab this is

 

[bribo12]

First is a nudibranch and the second looks like a porcelain crabs

 

[raccioppi83]

After some research I agree the 2nd looks like a green porcelain crab. Do I have to worry about the nudibranch?

 

[bribo12]

Do you have coral?

 

[raccioppi83]

Yes I believe it was a hitchhiker on my button polyps

 

[Sniperhank]

Nudibranch look like what they eat so they can hide in the coral that they consume (or whatever else for that matter). I would remove it and do a coral dip to ensure there are no others.

 

[raccioppi83]

Okay, it is on the complete opposite side of the tank now. I'm assuming it should be removed?