. If they can thrive in a wild river system or human-made dams, it’s an indication that the aquatic ecosystem is doing just fine.
That was also an area where I fished for trout regularly in stocked dams, and I miss that convenience as a Johannesburg resident. The fishing is superb as the river is regularly stocked while also boasting wild populations of trout that have established themselves – another indicator of the health of the waters.
A dry fly floats on the water, often with a nymph pattern tied beneath that sinks below. This is very technical fishing that requires the fly to float in a natural way that produces no “drag” on the water, which makes it look unnatural and therefore unappetising. A streamer by contrast is a “wet fly” that goes below the surface that is stripped through the water by a pulling motion with your free hand.
I’m not aware of any attacks there in recent years, but you just don’t take that chance with dangerous African wildlife.