With drought conditions expected to continue over the coming months it is likely more fish kills will occur without significant rainfall to generate replenishment flows.
Community members are encouraged to report any similar incidents or observations: Fishers Watch Phoneline on 1800 043 536.
Location and date kill observed
Cause and extent
|Murray Darling Catchments|
Darling River, Menindee (6 Jan)
Affecting approximately 45 km of the Darling River below the Menindee Main Weir including Menindee township
Lake Keepit (Namoi River) (11 Jan)
Lake Burrendong (Macquarie River) foreshore (12 Jan)
|Lower Murrumbidgee from Hay to Balranald (Late Dec and 9 Jan)|
Lake Cathie / Innes near Port Macquarie (8 Jan)
Note: Fish kills of <100 fish were reported at Jimmy’s Beach (Karuah River) on 13 Jan and at Bowna boat ramp (Lake Hume) on 15 Jan which related to fishing activities and were not caused by environmental conditions.
If you want to report a fish kill, please ring the Fishers Watch hotline on 1800 043 536 or refer to the fish kill investigating and reporting protocol for more details.
Water quality can have a range of impacts on fish. The impacts can be acute, resulting in fish kills, or chronic, impacting on breeding, growth and development.
A fish kill is defined as "any sudden and unexpected mass mortality of wild or cultured fish".
Fish kills are often very visible events, which cause considerable interest and concern to the public and the media because they're often perceived to be the result of pollution or contamination of waters. In fact, there are many and varied causes of fish kills, and a large proportion are due to natural events.
The range of causes of fish kills in NSW is shown below. In just under half the fish kill events, the cause is not known. Where it is known the majority of cases are caused by one of three most common causes: