The fykes are used for catching wrasses also called (Labrus bergylta). Wrasses live along the coast from the Trondheim Fjord and along the Norwegian coast to around Gothenburg Sweden. They live in coastal areas and mostly along high mountainsides. The mountain gilt is a lip fish with strong lips. The fish is in great demand due to its ability to keep lice away from salmon in fish cages. A useful fish for biological control and fish farming.