Hypoxia

Millions of dead and rotting fish have clogged a vast stretch of river near a remote town in the Australian outback as a searing heat wave sweeps through the region.​Videos posted to social media showed boats plowing through a blanket of dead fish smothering the water, with the surface barely visible underneath.​The New South Wales government said on Friday that "millions" of fish had died in the Darling River near the small town of Menindee, in the third mass kill to hit the area since 2018.​"It's horrific really,…