Abstract: Gutting machine for fish, comprising a conveyor belt to receive fish, where the fish is placed with the abdomen facing a number of cutting and cleaning tools for gutting and cleaning of the fish when it is transported on said conveyor belt, in which said conveyor belt is equipped with a number of holding devices where respective holding devices are adapted for firmly holding the fish, and that one or more barriers arranged adjoining said conveyor belt are adapted to slow down the movement of the fish until the fish is firmly held in a respective holding device and is brought by the conveyor belt in its direction of movement. Also described is a method for gutting the fish in a gutting machine.