MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY
Jackfish. School of jackfish or big-eye trevally, Caranx sexfasciatus, by a reef wall. These fish gather in large schools during the day, seeking safety in numbers from predators. At night the school fragments to feed. Jackfish are fast- swimming predators reaching lengths of 80 centimetres. They inhabit tropical and subtropical coastal waters near reefs. They are a food fish.
Model release not required. Property release not required.