Cleaner Wrasse

The cleaner wrasse, also called the bluestreak wrasse create their own little cleaner stations.  Cleaning stations are occupied by different units of cleaner wrasses, such as a Group of youths, a pair of adults, or a Group of females accompanied by a dominant male. When visitors come near the cleaning stations, the cleaner wrasses greet the visitors by performing a dance-like motion in which they move their rear up and down. The visitors are referred to as "clients".