The deaths were likely caused by low oxygen levels as floods recede, a situation made worse by fish needing more oxygen because of the warmer weather.

Dead fish clog a river near the town of Menindee in New South Wales, Australia.HANDOUT / AFP – Getty Images

https://www.nbcnews.com/news/world/millions-dead-fish-wash-heat-wave-australia-rcna75620

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March 19, 2023, 2:06 AM PDT/Source:Associated Press

ByAssociated Press

Millions of fish have washed up dead in southeasternAustraliain a die-off that authorities and scientists say is caused by floods and hot weather.

The Department of Primary Industries in New South Wales state said the fish deaths coincided with a heat wave that put stress on a system that has experienced extreme conditions from wide-scale flooding.

The deaths were likely caused by low oxygen levels as floods recede, a situation made worse by fish needing more oxygen because of the…