Fish

Latest news

Some of the first research into how microplastics are affecting New Zealand fish species has revealed that microplastic fragments can find their way through the gut lining and into muscle tissue.
Sadie Mills has come a long way from scaring the inhabitants of Scottish rock pools. Sarah Fraser explains.
A lack of information about New Zealand oceanic shark populations is making it difficult to assess how well they are doing, says a NIWA researcher.
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.

Our work

NIWA has a number of projects that are allowing us to better understand the interaction between snapper and their environment over their life cycle.
NIWA is looking for people who have had a long association with the Hauraki Gulf or Marlborough Sounds to help them with a research project on juvenile fish habitats.
NIWA is in its third year of a 5-year phased project on the deepwater line fishery in Tonga funded by the NZ Aid Programme’s Partnership for International Development Fund. The aim of the project is to deliver the improved governance, management, and economic and biological sustainability of the fishery focusing on deepwater snapper and bluenose in the Tonga EEZ.
The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage.

Latest videos

The world's most mysterious fish

A video about The world's most mysterious fish. NIWA researchers are working with iwi to try to unlock the secrets of New Zealand tuna—freshwater eels. Every year tiny, glass eels wash in on the tide at river mouths along our coast. But where do they come from and how do they get there?

 

Science on the high seas

Sustainable fisheries depend on good scientific data about fish stocks. NIWA scientists head out into Cook Strait on Research Vessel Kaharoa to survey the hoki fishery and advise officials on catch rates.

Freshwater fish swim their all for science
The tiny inanga have been plucked from Waikato streams and held in a darkened laboratory for the last month, undertaking highly advanced testing to find the strongest, fittest and fastest fish.
Ocean acidification - what is it?

The on-going rise of carbon dioxide (CO2) in the atmosphere is not only changing our climate—it is also changing our oceans. Take a look at the work of the NIWA-led CARIM project into what these changes may mean for the delicate balance of marine life.

A giant squid and several glow-in-the-dark sharks were surprise finds for NIWA scientists last month on the Chatham Rise during a voyage to survey hoki, New Zealand’s most valuable commercial fish species.
A four-year research programme focused on the co-management and restoration of our freshwater taonga species wraps up this year.
Science on the high seas

Sustainable fisheries depend on good scientific data about fish stocks. NIWA scientists head out into Cook Strait on Research Vessel Kaharoa to survey the hoki fishery and advise officials on catch rates.

Ever wondered what fish is served in a Filet-o-Fish at MacDonald’s? It’s hoki. Fish fingers at the supermarket? Chances are, they’ll be hoki too.
If you want a healthy fishing industry, you need to know how healthy your fish stocks are. Sam Fraser-Baxter talks to a scientist who went to sea to find out.
Tiny, translucent eels may hold the answers to one of the fish world’s great mysteries. Zen Gregor investigates.
Just past the locks, alarms and big heavy doors is a rather macabre sight.
The New Zealand ship Janas has recently returned from a six-week winter research voyage to the Ross Sea where scientists made the first observations of developing Antarctic toothfish embryos.
NIWA is heading out into the Hauraki Gulf this month to carry out a survey of juvenile snapper– the first of its kind for 20 years.
Research shows how fish are being affected by microplastics.
NIWA researchers are seeking the help of divers, snorkellers and lobster potters in the Hauraki Gulf and Bay of Plenty to learn more about how rock lobster are faring.
Contraptions that resemble upside-down kitchen sinks have been placed in the Waikawa River in Southland to attract a notoriously elusive native fish species.
Under the light of the moon where the river meets the sea, NIWA researchers are planning to catch tiny fish that are all but invisible to the naked eye.

Freshwater Update 81 brings you the latest information from our Freshwater & Estuaries Centre, with articles ranging from how NIWA scientists are solving the longfin eel migration mystery, how we're taking you diving with us at Fieldays, and a word from one of the editors of the new Lakes Restoration Handbook.

NIWA freshwater scientists are pinning their hopes of solving an age-old mystery on 10 female longfin eels who are about to begin an epic journey to their spawning grounds somewhere in the Pacific Ocean.
Freshwater fish swim their all for science
The tiny inanga have been plucked from Waikato streams and held in a darkened laboratory for the last month, undertaking highly advanced testing to find the strongest, fittest and fastest fish.
In a secret training location on the outskirts of Hamilton, a squad of whitebait is being put through its paces by fish scientists.
Ocean acidification - what is it?

The on-going rise of carbon dioxide (CO2) in the atmosphere is not only changing our climate—it is also changing our oceans. Take a look at the work of the NIWA-led CARIM project into what these changes may mean for the delicate balance of marine life.

The New Zealand Freshwater Fish Database (NZFFD) records the occurrence of fish in fresh waters of New Zealand.

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All staff working on this subject

Hydro-ecological Modeller
Principal Scientist - Fisheries
Population Modeller
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Principal Scientist - Fisheries Modeller
Assistant Regional Manager - Christchurch
Fisheries Acoustics Scientist
Fisheries Data Manager
Fisheries Scientist
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Principal Technician - Fisheries
Freshwater Fish Ecologist
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Marine Ecology Technician
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Principal Technician - Fisheries
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Environmental Scientist
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