MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY
Robust fusilier fish. School of robust fusilier fish (Caesio cuning). These fish congregate around the edges of coral reefs. Such schooling makes it difficult for a predator to target an individual fish. Fusiliers feed on plankton, and may reach a length of up to 30 centimetres. Photographed off Sipadan Island, Malaysia.
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