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16th Annual Smithsonian Magazine Photo Contest Natural World
Cleaning Line

Like cars queuing for a wash, Black Pyramid Butterflyfish take turns to be cleaned by a pair of cleaner wrasse. The butterflyfish tilts its head upwards to signal to the wrasses it was ready to be pampered.

Photo Detail
Date Taken: 08.2016
Date Uploaded: 11.2018
Photo Location: Aceh, Indonesia
Camera: Canon EOS 5D Mark III
Copyright: © WAI HOE MOK