A removal effort began Feb. 9, 2026, at Auckland’s Western Springs Lake using electrofishing to target invasive fish and protect native species and water quality.

A major pest fish removal operation began February 9, 2026, at Te Wai Ōrea / Western Springs Lake in Auckland, using electrofishing to target invasive species like koi carp and brown bullhead catfish. The effort, led by Auckland Council and the University of Waikato, aims to improve water quality, reduce algal blooms, protect native eels, and lower health risks. Native fish are unharmed and returned. Water levels were lowered to enhance effectiveness, with cultural monitoring by mana whenua. The project supports long-term restoration, including potential eel sanctuary status, and relies on ongoing management and public cooperation to prevent reinvasion.