Redclaw crayfish, an alien invasive species with huge negative effects on freshwater systems, have been detected in the Crocodile River, Kruger National Park.
Image: File
As a South African-born naturalised Australia I was blissfully unaware that highly invasive Australian red claw crayfish are spreading rapidly across southern Africa's waterways.
In southern African nations, are these Aussies being declared illegal immigrants?
Eric Palm
Australia