It's probably starved and really stressed . They live in small colonies in the wild and really suffer greatly when taken into captivity! This is one species that I would never buy. You'd be so much better off with cleaner shrimp. They don't need nearly as wide a diet. They adjust better to captivity etc.
I wish you luck and would try to feed it either live mysis or live copepods to encourage it to perk up a touch,
I wish you luck and would try to feed it either live mysis or live copepods to encourage it to perk up a touch,