Dr. Paul Franklin: Freshwater ecologist on almost half our river network being inaccessible to migratory fish - Early Edition on Newstalk ZB

A study by NIWA shows almost half of our river network is inaccessible to migratory fish.

A further 36 percent could also be restricted but has not yet been assessed.

NIWA is now studying the swimming capabilities of native fish to try and come up with a solution.

Freshwater ecologist Dr. Paul Franklin joined Early Edition.

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