Yellowstone National Park is preparing to temporarily close part of Buffalo Creek as wildlife officials launch a targeted effort to remove invasive rainbow trout threatening native fish populations. The conservation operation will begin on August 31, with the northern section of Buffalo Creek remaining closed to visitors until September 7 while biologists treat the waterway. According to NBC Montana, the park will use rotenone, an EPA-approved piscicide, to eliminate the invasive fish from the creek. Yellowstone National Park said the work is intended to protect Yellowstone cutthroat trout, the only trout species native to the park, from competition and hybridisation. The project forms part of a broader native fish conservation programme aimed at protecting the ecological health of the Lamar River watershed.
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