The IPHC requests your help as they design and implement a sampling program to determine the sex of halibut that are landed by the commercial longline fishery. Accurate sex-ratio information is necessary for stock assessment - most notably, for accurately estimating and monitoring spawning stock biomass. You can help by marking the sex of the fish that you catch, while dressing them, using the identification-cuts that are described in this handout.
Photo: Tele Aadsen