Silver Trevally are found along the coast of southern Australia. They also inhabit the waters of Lord Howe Island, Norfolk Island and New Zealand and the sub-tropical to temperate waters of the Atlantic and Indian Oceans. Juvenile silver trevally usually inhabit estuaries, bays and shallow continental shelf waters, while adults form schools near the sea bed on the continental shelf. Some older fish school near the surface in deeper shelf waters. Adult trevally also live on inshore reefs and over open grounds of sand or gravel, or in large bays and inlets.
Silver trevally spawn in summer.
They have been found spawning in both estuaries and shelf waters. They appear to be serial spawners, releasing several batches of eggs over a number of weeks. The eggs are planktonic and are about 0.8mm in diameter. Silver trevally are carnivores and feed on polychaete worms, molluscs and crustaceans such as amphipods on the sea bed. Pelagic schools of silver trevally are known to feed on planktonic crustaceans such as krill.