Fisheries

We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.

NIWA collects a vast range of environmental information about New Zealand’s environment from the sky to the seafloor.

Whitebait are the juveniles of five species of galaxiidae, a family of fish confined to the Southern Hemisphere.

Accurate reporting on the amount of fish and invertebrates that are caught and discarded by New Zealand’s commercial fishing industry is vital to effective management of these fisheries.

Scholarships available to both Masters and undergraduate students in the fields of fisheries science and marine biology.

View data that show reported target catch and estimated bycatch.

Identifying biological factors that may be limiting fish numbers requires sampling to ensure that key invertebrate prey species are not scarce and that pest fish, especially predators, are not abundant.

NIWA has transformed 1.5 million square kilometres of data into the most accurate and detailed map yet of the land underneath the sea around New Zealand.

Tuna is a generic Māori word for freshwater eels. The word will be used interchangeably in this resource.

Casal2 is an advanced software package developed by NIWA for modelling the population dynamics of marine species.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"

NIWA is today issuing some scientific information on the parasite Bonamia ostreae, recently discovered in Big Glory Bay, Stewart Island, and the risk it poses to the Bluff oyster fishery.