Levin, Jonathan C, Darragh J Woodford, and Gavin C Snow. “Evaluating the Effectiveness of Freshwater Fishes As Bio-Indicators for Urban Impacts in the Crocodile (West) Catchment, South Africa”. Water SA 45, no. 3 July (July 31, 2019). Accessed January 25, 2022. https://watersa.net/article/view/6745.