“Salmonids were introduced to southern Africa near the turn of the century from Loch Leven brown trout stock imported from Scotland. These browns did well in their environment, and rainbows were introduced a decade or so later to complement them. Still, most of the rivers retain a clear identity, either brown or rainbow waters, rarely ever holding both species.

South African trout waters are small by international standards, more streams than rivers, yet the average size of the trout caught is large. Most of the rivers produce fish of up to four or five pounds, and in the Barkly East area river fish up to nine pounds are not rare.”

http://www.places.co.za/html/flyfishing.html

http://www1.southafrica.net/Cultures/en-GB/consumer.southafrica.net/Things+to+Do/Activities/WaterActivities/Fly-fishing+for+Rainbows.htm