The common carp (Cyprinus carpio)

VPC Animals Photo/Alamy

The Australian government is considering using a type of herpes virus as a biological agent to reduce the population of carp in the country’s waterways.

Since its introduction to Australia in the late 1960s, the common carp (Cyprinus carpio) has become an ecologically destructive species.

“Their main impact has been a decline in biodiversity. Native fish and native water plants have declined,” says Ivor Stuart at the Arthur Rylah Institute for Environmental Research, the biodiversity research organisation for the state government of Victoria in Australia.

He and his colleagues have now …