I have heard in the past that when the vaal experiences such huge flows, that all the crap that has settled is washed up into the upper layers releasing unwanted chemicals from decomposition of the muck and that is not good for the fish. The last time, a few years back (not as high as now) caused major fish kills, yet the yellows still remain - they are a resilient bunch for sure!
"So here’s my point. Don’t go and get your ego all out of proportion because you can tie a fly and catch a fish that’s dumb enough to eat a car key.." - Louis Cahill - Gink and Gasoline
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