In 1997, the state applied some 70,000 pounds of the pesticide Noxfish in a desperate attempt to kill the voracious and prolific Northern Pike that mysteriously infests Lake Davis, near Portola.  But despite poison, electro shock, and even dynamite, the non-native pike continue to dominate the lake.  Fish and Game’s  Steve Martarano says the pike must be eradicated.
 
There’s a possibility they could take hold in the Delta and affect the entire salmon and trout fishery in California … the damage they could do … you just can’t comprehend …
 
In September, the state will apply a massive dose of poison that they say will not have the negative side effects that outraged locals in 1997, like fouled water supplies and odor.  Then, after all the fish have died, and the poison dissipates, they’ll restock the lake and hope the pike don’t return.

Brian Bahouth KXJZ News.