The Economic Times

In 1995, a Tasmanian fisherman found a dead carp. What followed was a four-decade operation to remove nearly 50,000 European fish

A dead carp spotted in Tasmania's Lake Crescent in 1995 triggered a 28-year campaign to eradicate invasive European carp from Lake Crescent and Lake Sorell. Authorities removed 49,301 carp using radio-tagged Judas fish, nets, electrofishing and genetic testing. By 2025, surveys found no remaining carp, allowing officials to declare the invasive species functionally eradicated and paving the way for the lakes' native ecosystem to recover.