A redfin virus is believed to be responsible for a fish kill in Lake Ginninderra last week.
Staff from Territory and Municipal Services and the Environment Sustainable and Development Directorate were called out to clean up many hundreds of dead fish on Thursday last week.
A TAMS spokesman said the majority of dead fish were redfin, an introduced species, and a virus is the suspected cause.
“Tissue samples of the dead fish have been sent for laboratory testing in Sydney with results expected early next week,” the spokesman said.
“EHN or redfin virus, which has previously been reported in Lake Ginninderra and Lake Burley Griffin, is believed responsible. EHN poses no risk to human health.”
He said there was no correlation between the fish kill and the recent release of more than 30,000 golden perch fingerlings into the lake.
Any further sightings of dead fish in Canberra’s lakes and rivers should be reported to Canberra Connect on 13 22 81.