More than 150 mature Murray Cod were released into Valley Lake/Ketla Malpi by RecFish in May 2025 to create a recreational fishery and improve water quality. The introduction aimed to alter the lake's food web, reduce algae levels and enhance the natural environment.
Unfortunately, in October 2025, Council reported to PIRSA through Fishwatch that several Murray Cod had been found deceased or dying.
"The cause was unclear. There were no signs of disease, physical damage, pollution, or changes in water quality and the fish were too degraded for analysis," City of Mount Gambier Environmental Sustainability Business Partner Aaron Izzard said.
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