VIDEO/ An unusual phenomenon occurs, millions of dead fish "invade" this river

Millions of dead fish have filled most of a river in southeastern Australia, which is being hit by a severe heat wave. The third time since 2018 that such a phenomenon has been seen in the area.

Videos posted on social media show boats sailing through a layer of dead fish that makes the surface of the water almost invisible.

According to the local government, the fish population in the river had increased significantly after the recent floods, but the waters have since receded.

"The death of these fish is related to the low level of oxygen in the water (hypoxia), because the flood waters are receding," said a statement from the government.