“…First of all, fish should be caught undamaged; therefore, traps should be constructed of netting that completely prevents the meshing of fish. Trapped salmon should be also protected from seals by appropriate construction (see Lunneryd et al, 2003;Lehtonen and Suuronen, 2004;Kauppinen et al, 2005;Suuronen et al, 2006). Fishermen should be able to easily identify wild and stocked fish by a clear external mark, e.g.…”