Environment Protection Authority Victoria (EPA) is aware of a fish death incident that has occurred in the Anglesea River estuary.
EPA received a report from a member of the public that up to 100 dead fish were in the river, but when officers attended the site this afternoon about 12 were seen.
EPA officers have also taken water samples to determine if the incident is the result of natural causes or pollution.
If confirmed as a natural event, it is likely to have been caused from rain runoff from acid-containing soils in the area.
To protect public health when the Anglesea River is acidic, Surf Coast Shire Council, Department of Health and Human Services and EPA advise the public not to eat dead or dying fish and not to swim in the river as this may cause eye or skin irritation.