How to Fillet Salmon

Step 3 Cut out the fins

With the tip of your knife, or edge of the ulu, cut out the dorsal and/or ventral fins, depending on whether you have a whole salmon or a half. Angle the blade slightly down and cut along the base of the fin, just far enough in to where the bones of the fin extend. Do this on one side of the fish. Then flip it over and cut out the other side in the same way.