GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Swarthy parrotfish (Scarus niger) swimming over coral formations with a bluestreak cleaner wrasse (Labroides dimidiatus) beside it (foreground). The swarthy parrotfish feeds on coral, while the bluestreak cleaner wrasse feeds on microalgae and debris on the scales of the parrotfish. Photographed in Egypt, Red Sea.
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