16th Annual Smithsonian Magazine Photo Contest Natural World
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 Location:||Aceh, Indonesia|
|Camera:||Canon EOS 5D Mark III|
|Copyright:||© WAI HOE MOK|