Teller Lake in Boulder , Colorado , is overrun with 3,000-4,000 goldfish . Officials believe four or five fish were dumped November 2012 . Will potentially destroy the natural ecosystem by eating resources and introducing foreign diseases . The lake will either be drained or the fish removed using electroshocking , where an electrical current is put in the water , paralyzing the fish .
Teller Lake in Boulder , Colorado , is overrun with 3,000-4,000 goldfish . Officials believe four or five fish were dumped two or three years ago . Will potentially destroy the natural ecosystem by eating resources and introducing foreign diseases . The lake will either be drained or the fish removed using electroshocking , where an electrical current is put in the water , paralyzing the fish .