JOHN MARAVENTANO / SCIENCE PHOTO LIBRARY JOHN MARAVENTANO / SCIENCE PHOTO LIBRARY
Tiger grouper, Myctereoperca tigris, being cleaned by Cleaning Goby, Gobiosoma genie in Grand Cayman. Tiger groupers can change colors dramatically. They can reach a maximum length of 100 cm (3ft. The Cleaning Goby has a bright V shape on its head and sides, which is used to advertise its services. Maximum length is 4.5 cm (1 3/4 in).
Model release not required. Property release not required.