Giant kokopu Photo: DOC/Sjaan Bowie
It's World Fish Migration Day on 21 April - a global bi-annual event that shines a light on migratory fish and their need for open river systems.
Aotearoa has five species of migrating fish and DOC's Threatened Species Ambassador, Nicola Toki, talks about the largest species - Giant Kokopu - and how barriers in waterways can prevent them from migrating.
