PETER SCOONES / SCIENCE PHOTO LIBRARY PETER SCOONES / SCIENCE PHOTO LIBRARY
Longtail tuna fish (Thunnus tonggol) school. These fish, also known as northern bluefin tuna, inhabit the waters of the Indo-Pacific region. They form schools of varying sizes, feeding on crustaceans, cephalopods and other fish. They are important commercial food fish. Photographed off Japan.
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