article_snippet.sent: In danger: Local officials are now considering two options - electroshocking the fish or draining a lake .
article_snippet.sent: One is to drain a lake completely, or use electrofishing, where all the gold fish are stunned by an electrical current and removed while all the gold fish are paralyzed.
article_snippet.sent: An electrical current is put in the water in sections and the stunning brings all the gold fish to the surface.
article_snippet.sent: An electrical current was a successful method used in November 2012 at a lake, also in Boulder, to remove koi goldfish from the water that had been improperly introduced.
article_snippet.sent: In November 2012, over 2,000 koi goldfish were removed from a lake by 'electrofishing', where all the gold fish are shocked with an electric current and paralyzed, causing all the gold fish to float .
article_snippet.sent: Effective: With electroshocking, crews go out in a boat and stun all the gold fish to paralyze and then collect all the gold fish . '
highlights_snippet.sent: Teller Lake will either be drained or the fish removed using electroshocking, where an electrical current is put in the water, paralyzing the fish .