This report summarises the Chatham Rise ling stock (LIN 3&4) and fishery. It describes the spatial structure of the stock, biological parameters, and longline standardised catch per unit effort (CPUE). The longline fishery CPUE showed a decline between 1990 and 1997, followed by a flat trend. In contrast, the survey biomass trend presented a flat and variable trend from 1992 onwards. Because of this conflict, it was uncertain if the longline CPUE was an index of the biomass of ling.
FAR 2022/64 Descriptive analysis of ling (Genypterus blacodes) on the Chatham Rise (LIN 3&4) up to 2020–21 and inputs for the 2022 stock assessment
Report - Fisheries Assessment Report (FAR)