WA DPIRD wraps up probe into Myalup Beach fish kill event

Officers from the WA Department of Primary Industries and Regional Development (DPIRD) have concluded investigations into a fish kill at Myalup Beach in Myalup.

No more dead fish have been reported and the event appears to have ended.

Laboratory analysis of fish from the beach and water samples from the beach and the diversion drain has not been able to determine the cause of this event, although nitrate levels may have been slightly higher than normal.

The water was also heavily stained with what appeared to be tannins, which are associated with decomposing organic matter and which can rapidly affect water quality parameters such as pH and cause stress to aquatic animals.

The DPIRD said that of further information is available, there will be further updates.

In the meantime, the DPIRD again reminds people to stay safe around fish kills by following the general Department of Health advice. More information on fish kills​ can be found on DPIRD’s Fisheries website.


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