Abstract: In a method for vaccinating fishes, the fishes are first anaesthetized in a vessel (1) containing anaesthetic-admixed water. From the vessel, the fishes-as they are anaesthetized and as a consequence thereof sink to the bottom-are conveyed upwards anad transferred to an unidirectional device (4). The unidirectional device (4) ensures that the further conveyed fishes are carried head first in a feeding direction. From the unidirectional device (4), the fishes are individually carried, via an edgewise-turner (6) ensuring turning of the fishes edgewise, into a vaccination device (7) having injection means for individual vaccination of each fish. A machine for carrying out this method comprises a conveyor (2) for conveying anaesthetized fishes from the vessel (1) to the unidirectional device (4), wherefrom the fishes are individually carried, via the edgewise-turner (6), into a vaccination chamber (15) provided with vaccination devices for vaccination of the fishes individually.

Abstract: In a machine for gutting fish, particularly trout and salmon, wherein the fish is guided through the machine in swimming position, and wherein the machine comprises tools for cutting the fish's belly, removal of the intestines, cutting the abdominal membrane covering the blood rim, and removal of the blood rim, one has aimed to provide a tool for cutting said abdominal membrane such that the blood rim is not torn up, and such that the rear part of the abdominal cavity of the fish is not damaged. This is achieved in that the cutting tool for the abdominal membrane consists of a rotary knife disc (4) having a V-shaped circumference portion (4', 4"). When such a knife disc (4) approaches the rear edge of the abdominal cavity of the fish, the fish will be raised by the V-shaped circumference portion of the knife disc, so that one avoids that the knife discs causes damages in the rear part of the abdominal cavity of the fish.

Abstract: In a gutting machine, particularly for trout and salmon, wherein the fish is guided through the machine in swimming position, and wherein the machine comprises tools for cutting the belly, removal of the intestines, cutting of the abdominal membrane covering the blood rim, and removal of the blood rim, one has aimed to achieve removal of the blood rim substantially in one continuous piece without damaging the fish. This is achieved by means of one or more stationary, in the longitudinal direction of the machine (the feeding direction of the fish) resilient scraping or cutting means (7, 8) having bow or spoon shape.