Cleaner shrimp

Species of crustacean

Cleaner shrimp is a common name for a number of swimming decapod crustaceans that clean other organisms of parasites. Most are found in the families Hippolytidae and Palaemonidae, though the families Alpheidae, Pandalidae, and Stenopodidae each contain at least one species of cleaner shrimp. The term "cleaner shrimp" is sometimes used more specifically for the family Hippolytidae and the genus Lysmata.

This keyword could refer to multiple things. Here are some suggestions: