<p>The Wellington Acclimatisation Society was established in 1871, as part of a larger acclimatisation movement that featured the systematic introduction and exchange of many species across the world. After merging with other lower North Island societies, the Wellington Society began work on introducing trout to the streams and rivers of the district. Initially, the Society was made up of prominent members of the Wellington community, but over time these well-connected enthusiasts gave way to those with practical skills and knowledge. During the twentieth century the Society became an increasingly formalised group, working closely with the Government and other acclimatisation societies within New Zealand, as well as internationally. These networks, which were initially essential for trout introductions through imperial links, soon moved from an emphasis on importations and exchange to a focus on the continued maintenance of trout species throughout the Wellington district. The success of trout introductions relied on the ability of the Wellington Society to sufficiently modify the New Zealand environment. The close ties that existed between acclimatisation societies and the colonial Government meant the Wellington Society could undertake extensive environmental modification and management using a special authority, alongside a degree of involvement from the community. In this way, the introduction of trout had a significant impact on both the social and environmental history of New Zealand.</p>