In 1997, California officials poisoned Lake Davis to kill invasive northern pike; the fish returned within two years

California officials battled invasive northern pike in Lake Davis using fish poison. Initial poisoning efforts in 1997 failed to permanently remove the predatory fish. A second, more extensive operation in 2007 finally eradicated the invasive species. This decade-long struggle highlights the unpredictable nature of invasive species eradication. Lake Davis is now a restored trout fishery popular with anglers.

In 1997, California officials poisoned Lake Davis to kill invasive northern pike; the fish returned within two years
California officials battled invasive northern pike in Lake Davis using fish poison. Initial poisoning efforts in 1997 failed to permanently remove the predatory fish. A second, more extensive operation in 2007 finally eradicated the invasive species. This decade-long struggle highlights the unpredictable nature of invasive species eradication. Lake Davis is now a restored trout fishery popular with anglers.