Waterways and rivers plagued with invasive carp after floods in the Murray-Darling Basin

European carp – an invasive species – are breeding in huge numbers, putting smaller native Australian fish under pressure as they stir up the water and damage aquatic vegetation.
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John Koehn, an adjunct professor at Charles Sturt University’s Gulbali Institute, says the massive carp spawning event is not unusual for wet times and it will be months before it is known how many of the carp survive to adulthood.

After a year of rain, towns at the end of Australia’s giant river system await the slow, inevitable deluge.

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