An artificial flood in the Grand Canyon aimed at building sandbars to protect the endangered humpback chub has led instead to an eight-fold increase in the nonnative fish that is eating the chub -- the rainbow trout.
So now, the federal Bureau of Reclamation is proposing to again kill thousands of trout using electroshock, perhaps annually for a span of a decade, and at a cost of millions of dollars to taxpayers.
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