Invasion of the Nile tilapia: 140 dams and rivers sampled in two months to map the spread in Limpopo and Mpumalanga.

The article offers information on invasion of the Nile tilapia, a cichlid fish native to the northern half of Africa. Topics include information on how invasive alien species are a major threat to South Africa's biodiversity; information on uncontrolled introduction and spread of invasive species to ecosystems and habitats; and information on need for understanding invasive species.