Ghost shrimp is a name applied to at least three different kinds of crustacean:
Thalassinidea, crustaceans which live in deep burrows in the intertidal zone Caprellidae, amphipods with slender bodies more commonly known as "skeleton shrimps" Feeder shrimp (glass shrimp): Palaemonetes, small mostly transparent shrimp commonly sold for use in freshwater aquaria Palaemonetes paludosus, a species common to the aquarium trade.
See also Ghostshrimp (born 1980), pseudonym of Dan James, American graphic artist