The New Zealand alfonsino fishery occurs off the southern east coast of the North Island, and on the eastern Chatham Rise, north and south-east of the Chatham Islands. Alfonsino is caught by a mix of bottom and midwater trawling.
Analyses of commercial catch rates have demonstrated that alfonsino abundance trends are different in the four main areas of the fishery. The reasons for the differing trends are not well understood. More extensive biological sampling, aimed at monitoring the age structure of alfonsino in the different areas over time, is recommended.
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