ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Fairy basslets (Pseudanthias squamipinnis) shoaling over a coral outcrop as a scuba diver looks on. The male fairy basslet reaches a length of around 15 centimetres, twice the size of the female, and controls large harems of females in his territory. The fairy basslet is common in the tropical Indo-Pacific region region. Photographed in the Red Sea off Marsa Alam, Egypt, a popular diving resort.
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