Carp spawning event fills Murray-Darling flood waters with masses of flailing fish

Experts say while boom in invasive species is not good news for some native fish, there will be winners – including water birds

In creeks, rivers and flood waters across the Murray-Darling Basin, an uncountable and unfathomable number of invasive carp are turning waters into bubbling masses of flapping and flailing fish.

“It’s quite a sight,” said Matt Herring, an environment consultant. “I walked through one of the schools of carp a few days ago and it’s the first time I’ve trodden on fish with every step.”

Sign up for Guardian Australia’s free morning and afternoon email newsletters for your daily news roundup