Impact of codend mesh sizes on selectivity and retention of Acadian redfish Sebastes fasciatus in the Gulf of Maine trawl fishery

•Simple, robust codend selectivity models were developed for three mesh openings for Acadian redfish (Sebastes fasciatus).•Size of codend catch and codend side were not significant factors in the final model. All measures of model validity were positive.•The minimum mandatory mesh size (165mm) retained less than 5% of the fish that entered the net.•Location of escape (bottom, midwater, surface) likely affects mortality rates and should be investigated.