Yunderup fish kill examined

She said mass deaths were usually the result of natural events.

However, they can be due to other environmental and human-induced factors.

Wellya Crescent residents were appalled to find hundreds of dead fish washed up on the shores of the lake last week.

The spokeswoman said a fish kill was characterised by a large number of fish dying over a short period in one area.

Shire of Murray officers are also investigating |the kill.

The spokeswoman said natural causes of fish kills included algal blooms and infectious diseases, caused by viruses, bacteria, protozoans and fungi, and gas bubble disease, which is similar to the bends in humans. She said other natural causes could include bushfire ash, coral spawning, lifecycle events and oxygen depletion