VISIOMASTER has been developed for the purpose of eliminating the manual check of the fish that are gutted in a GUTMASTER 1200 gutting machine. VISIOMASTER takes a picture of the belly area of the fish that has just been cleaned. Before the fish leaves the gutting machine the picture has been analysed and it has been decided if the fish is going to move on in the process or go past a manual gutting table. Several cameras can be mounted to the same PC. A different camera does not have to check fish, but can for example be used for sorting the fish when they enter the production area.