Have you ever heard of a fish climbing competition? Mia Blyth drops in on the native fish getting put through their paces for a very good cause.
Nearly half of New Zealand's river network is partially or fully inaccessible to migratory fish, a new study shows.
New Zealand’s native fish are doing their best to climb up ramps in a NIWA laboratory so scientists can learn how to better help them navigate our tricky waterways.
At night, in the NIWA lab in Hamilton, lamprey have been climbing structures to help scientists understand how they can navigate waterways.
A new programme at NIWA will focus on finding ways to protect our freshwater species now and in the future.
Contraptions that resemble upside-down kitchen sinks have been placed in the Waikawa River in Southland to attract a notoriously elusive native fish species.
Tuna or freshwater eels are a very significant, widely-valued, culturally iconic mahinga kai species.
NIWA freshwater scientists are pinning their hopes of solving an age-old mystery on 10 female longfin eels who have now begun an epic journey to their spawning grounds somewhere in the Pacific Ocean.