Pretty sure it's a shrimp as it seems that is just the head, kinda long like. Not round looking, if that makes sense. Plus the clicking points towards a pistol from what I understand. Or do crabs click too?
No way I could get it out right now since it's in the bottom middle rocks.
Funny thing is, I think it came in on a coral! No new rocks put in and NO clicking before 4 months ago. Pretty sure it was on a Tubipora I bought from the shop since it was the largest piece I've brought home and around the right timing.
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45 Gallon Cube with 10 Gallon Sump, Lighting 8 bulb T5, Vertex IN 80 Skimmer
-2 Occelaris Clowns, Engineer Goby, RBTA, Peppermint Shrimp