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

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Once juvenile kākahi detach from the host fish they are very difficult to find because they are very small and live below the surface in streams and lakes. Pictured are juvenile kākahi raised in NIWA’s labs.
Stuart Mackay, NIWA

Once juvenile kākahi detach from the host fish they are very difficult to find because they are very small and live below the surface in streams and lakes. Pictured are juvenile kākahi raised in NIWA’s labs.