Method of processing of fish, for example salmon and related species, said method comprising the steps of- providing a live fish,- stunning the fish,- slaughtering the fish subsequent to the stunning of the fish,- subjecting the slaughtered fish or part of the slaughtered fish to an electrical stimulation prior to at least a further processing step of the slaughtered fish or part of the slaughtered fish, and- wherein said at least one further processing step comprises the step of removing pin-bones from the slaughtered fish or part of the slaughtered fish.By subjecting the slaughtered fish or part of the slaughtered fish to the electrical stimulation it is achieved that the pin-bones can be removed without waiting for the normal rigor process to be concluded and the normal post-rigor state to be reached and further it is achieved that the pin-bones can still be removed satisfactorily, e.g. without breaking when being pulled etc., since the bonding of the bones are relieved by the electrical stimulation.