Within three days of infection, the virus begins to destroy the carp’s skin and kidneys, and they die within 24 hours of showing symptoms. As an invasive species, the carp are estimated to cause $500 million in damage, consuming local fish, turning up river beds, and making it difficult for native marine life to feed and breathe normally.
Thus far, trapping, commercial fishing, and exclusion haven't sufficiently culled the carp population, reports The Guardian. And since fish don't know what condoms are, they're powerless against herpes.
“Suddenly, there will be literally hundreds of thousands, if not millions of tons of carp that will be dead in the River Murray,” Pyne told ABC News. "There’s obvious talk about whether the carp could be used for fertilizer, whether they could be used for pet food, whether they’ll need to be buried in large graves and be allowed to dissipate back into the system."
In addition to killing carp, the project will require measures to boost the native fish population. Oh, and somebody has to do something about millions of dead fish.