Fisheries

NIWA researchers have produced a series of calendars to inform people when New Zealand's native freshwater and sport fish are migrating and spawning.

NIWA's publication "Freshwater Fish Spawning and Migration Periods" is designed to help people working near freshwater to minimise effects of their work on freshwater fish species.

New Zealand’s leading freshwater and estuarine research body is harnessing the national curiosity about ecology to find out more about grey mullet.

Niwa scientists have anchored an echosounder to the sea floor of Terra Nova Bay that could reveal the mystery of silverfish reproduction under the Antarctic ice.

NIWA scientists have anchored an echosounder to the sea floor of Terra Nova Bay that could reveal the mystery of silverfish reproduction under the Antarctic ice.

Now back on dry land, Voyage Leader Richard O'Driscoll reflects on the final days of RV Tangaroa's 2015 Antarctica expedition.

Each March, oyster lovers descend on the catch of Bluff’s best bivalves – a seasonal delicacy from one of the last remaining wild oyster fisheries on the planet.

This research will investigate whether Antarctic silverfish eggs are spawned elsewhere or whether there is a mass migration of silverfish to their coastal spawning sites each winter.

Commercial toothfish fishing in the Ross Sea has the potential to affect some demersal (bottom-dwelling) fish species in the region through by-catch and ecosystem changes.

A NIWA study has shown that environmental factors influence the level of mercury in fish and other organisms in lakes in New Zealand's North Island geothermal area

More than 50 scientists from across the globe are meeting in Wellington this week to discuss how newly developed technology can best help countries manage their marine fisheries.