Local officials in the San Francisco area will now be turning to using a fish-killing chemical in the Mountain lake in an attempt to kill bass, sturgeon, fingerlings and alien carp and other invasive fish species.
The Presidio Trust is believed to be behind these efforts to rid the lake of these species and make the environment more friendly for the introduction of native fish species.
It is believed that the officials will be making use of Rotenone, which is a plant based chemical that is usually used to rid the lakes of many invasive fish species. This decision is thought to be implemented following three years of several attempts on the part of the officials, which included trapping, electrical stunning, hand capturing and netting the invasive fish, turned to be futile.
The officials claim that all the traces of Rotenone will disappear from the lake just within three days of its use. Meanwhile, the lake will be needed to be fenced off for a couple of days.
The officials are believed to have all permits from the water quality agencies. “The chemical only kills animals with gills — which means only fish — and before we can introduce the native species of wildlife we need to restore the lake, we must clean it of the species that never belonged there,” Michael Boland, the Presidio Trust’s projects chief, quoted in a public meeting on Thursday.
47 gallons of Rotenone is expected to be used in a 5 percent solution in liquid form in a single day in the month of November.