On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

NIWA Fish Tagging - Giant Kokopu

NIWA Fish Tagging - Giant Kokopu

New Zealand's iconic whitebait species are disappearing from our waterways, but help could soon be at hand for the threatened giant kōkopu. NIWA scientists are carrying out a trial involving 'tagging' of individual farm raised fish as part of a plan to reintroduce them to our waterways.