LOUISE MURRAY / SCIENCE PHOTO LIBRARY LOUISE MURRAY / SCIENCE PHOTO LIBRARY
Regal angelfish (Pygoplites diacanthus), also known as the royal angelfish. This fish inhabits coral reefs in the tropical Indo-Pacific region. It feeds mainly on sponges and sea squirts, and can reach a length of up to 25 centimetres. Photographed on Egypt's Red Sea coast.
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