Despite the relentless rain La Nina has brought to the East coast all summer, and flooding that made it undiveable for weeks, this summer has seen a huge number of tropical fish larvae arriving in the aquatic reserve, and warm waters has allowed many to grow significantly in the last few months. The latest is this black and white Doubleheader, at the southernmost point of its described range. They usually are a social fish inhabiting shallow reef.
Fish of Cabbage Tree Bay Aquatic Reserve, Sydney 