Crab Species - Red with Purple legs

[Drydens]

Can you help me identified a crab in my reef tank? It is about the size of a US nickle and is red with purple legs. What species?

 

[Octoberfest]

Can you get a picture?

Does it have any sort of habits that may narrow it down?

Check out porcelain crabs, there are several different colors though.

 

[plateboy3293]

If its in an sps it might be an acro crab they are okay here is a pic
http://www.reefs.org/hhfaq/crustaceans/crabs/faq_acrocrab.jpg/variant/medium

 

[Drydens]

Ureka. i think that is it! Many Thanks

 

[Airwolf75]

Or it could be a Trapezid Crab. it's like an Acro Crab, but lives on Porcillopora or Seritopa Corals. They are bigger. Here's the one I have. He has a much bigger coral to host on now.