Waving crab?

[Lilxxwojo1]

I just saw this little creature protruding from some of my live rock but I can't get a picture of him. It looks like it has antennas but no claws like a crab, it has like fins that it waves in scooping motions. I'll try and get a picture but it's in such an odd spot. Any ideas?

 

[Lilxxwojo1]

Here are some pictures he is nestled right in where the rocks meet

 

[Rosesrblu1]

Sounds like a porcelain crab. They have these fin like things that grab food from the water column. Google it and you can see. Very cool. I had one once as a hitch hiker, but I think he was eaten by something in my tank. Good luck

 

[Petrichor]

Sounds like a porcelain crab. Good little guy to have!

 

[kay-bee19]

....it has antennas but no claws like a crab, it has like fins that it waves in scooping motions...

It's interesting that it doesn't seem to have claws...porcelain crabs should have pretty decent sized pinchers.

 

[Lilxxwojo1]

I think he was nestled in so far I could only see the antennas but after looking at pictures that's definitely what it is.