Ivor Stuart/The Conversation

Exploding carp numbers are ‘like a house of horrors’ for our rivers. Is it time to unleash carp herpes?

Carp can make riverbeds look like golf balls – denuded and dimpled, devoid of any habitat. Releasing carp herpes virus is a controversial proposition, so let’s weigh up the risks and benefits.
Mannus Creek in NSW during the 2020 bushfire period. Luke Pearce

Before and after: see how bushfire and rain turned the Macquarie perch’s home to sludge

When the post-bushfire rains finally arrived, the situation for many fish species went from dangerous to catastrophic. A slurry of ash and mud washed into waterways, sending oxygen levels plummeting.