The Combined Nomenclature (CN), v1:2019
0303 14 20: Frozen trout "Oncorhynchus mykiss", with heads and gills on, gutted, weighing more than 1,2 kg each, or with heads off, gilled and gutted, weighing more than 1 kg each
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=ec3af576-673e-42d6-892f-12eb18291831