CHARLES ANGELO / SCIENCE PHOTO LIBRARY CHARLES ANGELO / SCIENCE PHOTO LIBRARY
Tiger grouper (Mycteroperca tigris) having the inside of its mouth cleaned by a cleaner goby (Gobiosoma genie; blue, black and yellow). This is an example of symbiosis, two organisms deriving mutual benefit from an action. The grouper has its mouth cleaned of parasites, which form a meal for the goby. These fish inhabit the tropical waters of the western Atlantic Ocean, including the Caribbean Sea. The tiger grouper is a voracious predator of smaller fish, which it catches from ambush. It may reach a metre in length. The goby, which would be eaten if not for the colouration that indicates it is a cleaner, does not exceed five centimetres in length.
Model release not required. Property release not required.