1. Department of Conservation Ecology and Entomology, Stellenbosch University, Stellenbosch, South Africa
2. Freshwater Research Centre, Cape Town, South Africa
3. DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity, Grahamstown, South Africa
4. South African Institute for Aquatic Biodiversity, Grahamstown, South Africa
5. Centre for Invasion Biology, South African Institute for Aquatic Biodiversity, Grahamstown, South Africa
6. Department of Entomology and Arachnology, Albany Museum, Grahamstown, South Africa
7. Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa