Catfish were introduced in New Zealand in the 1870s. These hardy fish prey on small native fish, as well as eat and compete with koura.
Learn how deer negatively impact New Zealand's native forests.
Learn why Gambusia affinis were originally introduced to New Zealand and how this pest fish is now negatively impacting our freshwater ecosystems.
Koi carp contribute to poor water quality and are a serious problem in both Australia and New Zealand.
This brochure shows how targeted pest control can help our vulnerable native species that are under attack by imported predators.
Native to some parts of Australia, the rainbow lorikeet was illegally released in Auckland in the 1990s. This dominant and prolific bird now poses a significant threat to our native wildlife.
Native to Australia, rainbow skinks were first recorded in Auckland during the 1960s and are now posing a threat to our rare native lizards.
Rudd are a voracious fish that compete with New Zealand's native fish and damage habitat.
View a series of short videos on 1080 and its effect on water, flora and fauna.
The Waihaha deer study area incorporates the eastern side of the Hauhungaroa Range and includes several forest types.
View Waikato Conservancy's most recently issued pesticide summary - covering the Waikato and Coromandel regions.