WaterNSW has warned against eating shellfish from a large river on the New South Wales South Coast following the discovery of a toxic algal bloom, raising concerns about the impact on Christmas trade for multiple oyster farmers downstream. WaterNSW has warned against eating shellfish from a large river on the New South Wales South Coast following the discovery of a toxic algal bloom, raising concerns about the impact on Christmas trade for multiple oyster farmers downstream. Public Health, Fishing and Aquaculture Industry, Environmental Management Latest business news