GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Yellowstriped fairy basslets (Pseudanthias tuka) shoaling on a coral reef. This gregarious fish inhabits reefs in the tropical Indian and western Pacific Oceans. It feeds on small crustaceans, plankton and fish eggs, and can reach a length of around 12 centimetres. Photographed off Papua New Guinea.
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