- An Australian river has been clogged up by millions of dead fish.
- Fish have been dying due to a heatwave that had swept through the region.
- Officials have said the incident is the third mass killing to hit the area in the recent past.
Millions of dead and rotting fish have clogged up a vast stretch of river near a remote town in the Australian outback as a searing heatwave sweeps through the region.
Videos posted on social media showed boats plowing through a blanket of dead fish smothering the water, with the surface barely visible beneath.
On Friday, the New South Wales government said “millions” of fish had died in the Darling River near the small town of Menindee, in the third mass kill to hit the area in the recent past.
The incident follows fish deaths in the same area in 2018 and 2019 where up to a million fish died from poor water flow, poor water quality and sudden temperature changes.
“It’s horrific really, there’s dead fish as far as you can see,” Menindee resident Graeme McCrabb told AFP news agency.
“It’s surreal to comprehend,” he said, adding this year’s fish kill appeared to be worse than previous ones.
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“The environmental impact is unfathomable.”
Populations of fish such as bony herring and carp had boomed in the river following recent floods, according to the state government, but were now dying off in huge numbers as floodwaters receded.
“These fish deaths are related to low oxygen levels in the water (hypoxia) as flood waters recede,” the state government said in a statement.
“The current hot weather in the region is also exacerbating hypoxia, as warmer water holds less oxygen than cold water, and fish have higher oxygen needs at warmer temperatures.”
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Previous fish kills at Menindee – about 12 hours drive west of Sydney – have been blamed on a lack of water in the river due to prolonged drought, and a toxic algal bloom that stretched more than 40km.
“Unfortunately this won’t be the last,” the NSW government had warned in 2019.
State government fisheries spokesman Cameron Lay said it was “confronting” to see the river choked by dead fish.
Menindee has a population of some 500 people and has been ravaged by drought and flooding in recent years.
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