Ross Files pictured in his backyard at the Darling-Baaka River, Menindee New South Wales Australia on Tuesday, March 21st 2023

Millions of dead fish floating along parts of the lower Darling-Baaka River, Menindee New South Wales Australia on Wednesday, March 22nd 2023Most of the fish affected are bony bream and other native species such as Murray cod, golden perch, silver perch and the invasive European carp.

European carp feeding on dead native fish after a mass fish kill event along parts of the lower Darling-Baaka River, Menindee New South Wales Australia on Wednesday, March 22nd 2023Most of the fish affected are bony bream and other native species such as Murray cod, golden perch, silver perch. The invasive European carp has also been impacted.

Graeme McCrabb assesing the Darling-Baaka River, Menindee New South Wales Australia on Wednesday, March 22nd 2023 after mass fish kill event.

Millions of dead fish floating along parts of the lower Darling-Baaka River, Menindee New South Wales Australia on Wednesday, March 22nd 2023Most of the fish affected are bony bream and other native species such as Murray cod, golden perch, silver perch and the invasive European carp.

Washed up Murray cod corpse after a mass fish kill event at Main Weir lower Darling-Baaka River, Menindee New South Wales Australia on Tuesday, March 21st 2023