23/06/2026
A little education on Sydney Rock Oysters and how QX disease changed oyster farming on the Hawkesbury River forever.
Many people enjoy Sydney Rock Oysters without realising the challenges involved in growing them.
One of the biggest challenges faced by us and other oyster farmers on the Hawkesbury River has been QX disease.
QX is a naturally occurring parasite that affects the digestive system of Sydney Rock Oysters. While it poses no risk to humans, it has caused widespread devastation throughout the Hawkesbury River, resulting in the loss of millions of oysters and significantly impacting farming families and businesses.
For many farmers, the effects of QX have been felt for years. Some farmers have even packed up and sold their leases due to the widespread devastation it has caused.
Combined with floods, changing environmental conditions and the long growing period required for Sydney Rock Oysters, it has tested the resilience of an entire industry.
Yet despite these challenges, Hawkesbury oyster farmers continue to adapt, innovate and do what they have always done — work with the river.
Every Sydney Rock Oyster represents years of care, patience and hard work before it reaches your plate.
When you enjoy Hawkesbury River Sydney Rock Oysters, you’re not just supporting local seafood. You’re supporting farming families who have weathered some of the toughest conditions the industry has ever faced and continue to produce one of Australia’s most unique and iconic oysters.
From farm lease to plate, every oyster has a story. 🦪
Video 1: an oyster with early stages of QX
Video 2: a healthy Sydney rock
Disclaimer: QX disease does not affect humans. It only affects Sydney Rock Oysters and is not harmful to people who consume oysters.
