Distribution
Africa: Save, Limpopo, Incomati, Umbeluzi and Phongola River systems. Generally confined to zones below 1200 m altitude along the lower escarpment and Lowveld of the Northern Province and Mpululanga, Swaziland and Kwazulu/Natal. A relict population: Lephalala River, Limpopo system, in the Waterberg, Northern Province.