What kind of shrimp is this? I thought maybe a Palaemonid shrimp of the genus Cuapetes or Palaemonella. Not sure. I found it on an Acropora millepora last week and threw it in my frag tank. I brought home this tiny Acro frag last night (from The Hidden Reef in Levittown, PA), and the shrimp has decided to host on it...The shrimp isn't hurting the frag, just really, really likes it. There are plenty of places to hide, including a dead Acro colony, but the shrimp insists it wants an Acro I guess.
More info here: