Dr Tatenda Dalu is a Lecturer in the School of Biology and Environmental Sciences at University of Mpumalanga and Research Associate at the South African Institute for Aquatic Biodiversity. He is a TWAS Young Affiliate, Iso Lomso and South Africa Young Academy of Science Fellow and also an Associate Editor for Aquatic Invasions, BioInvasions Records and Frontiers in Water – Environmental Water Quality, Ecology and Evolution, and Editorial Board Member for Environmental Advances. He is interested in the emerging freshwater pollutants, limnology, trophic ecology and plankton dynamics of wetlands, reservoirs and rivers/estuaries. He also has a strong interest in invasion ecology, biodiversity and conservation. Prof Ryan J. Wasserman is an Associate Professor of Zoology in the Department of Zoology and Entomology at Rhodes University, an Adjunct Research Fellow at Monash University Malaysia and a Research Associate at South African Institute for Aquatic Biodiversity. His research interests lie in interactions among aquatic organisms and how these interactions drive distribution and abundance. He is particularly interested in trophic dynamics, invasion and climate change ecology within the context of intra and interspecific interactions.