Analysis of the data from tooth fish fishery in the northern part of the Ross Sea (SSRU 88.1 B, C and G) revealed that the current approach to analyze longline fishery data in the presence of questionable CPUE values does not allow obtaining adequate information for decision-making.  Necessity to develop procedures for analyzing logline fishery data with aims to provide information for scientifically based decision-making in relation to questionable CPUE values have been discussed.