Substitute components in the Abernathy salmon diet were tested in 2 years of feeding trials with fall chinook salmon fingerlings. These diet tests indicated that turbot meal and dogfish meal were adequate substitutes for salmon meal. Soybean oil was superior to peanut, corn, cottonseed, or safflower oil. Corn gluten, safflower or soybean meals were inadequate substitutes for cottonseed meal. Dried buttermilk was equal to dried skim milk. The mixed diet could be stored under refrigeration for 3 days and the premixed meals could be held at room temperature for several weeks without observable deleterious effect on the fish; storage for greater periods was deleterious.