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Temporal trends in the relative abundance of New Zealand freshwater fishes: analysis of New Zealand freshwater fish database records

Publication date:  April 2017
Publication reference number:  CR 264

This report presents trends in the abundance of freshwater species between 1977 and 2015 based on standardised data from the New Zealand Freshwater Fish Database.

The key aim of the study was to develop more accurate methods for calculating the size and trends of freshwater fish species in New Zealand, to improve future environmental reporting.

The report also gives a snapshot of the population trends in both indigenous and exotic fish species between 1977 and 2015.