Alex Mustard / Pederson cleaner shrimp (Periclimenes pedersoni) cleaning the eye of a Nassau grouper (Epinephelus striatus), Bloody Bay Wall, Little Cayman, Cayman Islands. British West Indies, Caribbean Sea.

Alex Mustard / Pederson cleaner shrimp (Periclimenes pedersoni) hovering above a coral reef, beating its antennae, hoping to attract a fish to clean. This shrimp is carrying eggs. Bloody Bay Wall, Little Cayman, Cay...

Michele Westmorland / Pederson / Cleaner shrimp (Periclimenes pedersoni) in Corkscrew anemone (Bartholomea annulata) Dominica, West Indies, Caribbean.

Juergen Freund / Cleaner shrimp (Periclimenes pedersoni) on skin of Grouper fish (Cephalopholis fulvus)

Juergen Freund / Cleaner shrimp {Periclimenes pedersoni} Caribbean

Juergen Freund / Cleaner shrimp {Periclimenes pedersoni} transparent on coral, Caribbean

Juergen Freund / Cleaner shrimp {Periclimenes pedersoni} Caribbean

Claudio Contreras / Pederson cleaner shrimp (Periclimenes pedersoni), Cienaga de Zapata National Park, Matanzas Province, Cuba.