A method for preparing a fish product. In the method, a slaughtered fish is filleted in pre-rigor state, skin is removed from the fillet in pre-rigor state, the skinless fillet is arranged in a pre-salting process in pre-rigor state and allowed to remain there for the pre-salting period, the fillet is removed from the pre-salting process, the fillet is arranged in its transport package, in which it is subjected to a second salting process, and the fillet is allowed to remain in the transport package for at least one day.
