Periclimenes

Periclimenes, commonly known as glass shrimp or cleaner shrimp, is a symbiotic and often commensalistic genus of translucent shrimp within the family Palaemonidae.^[3][4] Species of this large genus feature a wide variety of coloration and patterns, widespread distribution throughout much of the world's tropical oceans, and are often sought out for aquarium trade.^[5]

This genus has undergone several changes in classification based on recent molecular studies comparing species within the genus. However, most recent molecular studies have only involved approximately 20% of the known species likely to belong to the genus. Additionally, most of the molecular studies performed involved Indo-Pacific species of Periclimenes and did not include presumed Periclimenes found in the Atlantic Ocean. Periclimenes has previously been suggested as being a polyphyletic taxa, and has already undergone splits into several new genera. It is likely the genus will undergo changes in classification in coming years with further research.^[6]

The genus contains the following species:^[7]

Periclimenes is widely distributed throughout tropical and temperate reef ecosystems of the Atlantic, Caribbean, Mediterranean, as well as Indo-Pacific Oceans.^[8][9]

Species present in this genus typically have a transparent to semi transparent body with antennae protruding from the head region. Additionally, large variation of color and patterns exist on the organisms throughout, making them highly sought out ornamental species in the marine aquarium industry.^[12]

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  Periclimenes imperator on a sea cucumber
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  Periclimenes colemani on an Asthenosoma varium.
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  Periclimenes soror on a pillow starfish Culcita schmideliana.
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  Periclimenes pedersoni
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  Periclimenes magnificus
• 
  Periclimenes imperator
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  Periclimenes holthuisi.
• 
  Periclimenes sagittifer.
• 
  Periclimenes tenuipes.
• 
  Periclimenes tosaensis
• 
  Periclimenes yucatanicus.