Sable fish

The threshold for amino acids can vary with the hunger level. Hungry sable-fish, Anoplopomafimhria, have a lower threshold (1.4 x 10 mol/1) than satiated fish (4.4 X 10 mol/1) (L0kkeborgeta/., 1995). 

The U.S. Food and Drug Administration (FDA) regulates the addition of nitrate and nitrite salts to fish products. Maximum permitted levels vary among products and types of fish, with up to 500 ppm residual sodium nitrate or 200 ppm sodium nitrite permitted as a preservative and color fixative in smoke cured sable fish, shad, or salmon (Code of Federal Regulations, 1981a,b Committee on Nittite and Alternative Curing Agents in Food, 1981). 

The photoperiod was also shifted to 16L 8D with lights-on at 11 AM. Assays were conducted between 0900-1600h. This insured that fish were assayed within a few hours of their dawn, when they normally spawn (Stacey, 1981). Fish were not fed for 24 hours prior to testing- Experiments were conducted May-June, the normal spawning season, and only healthy males with expres-sable milt and tubercles on both their opercula and pectoral fins were used. Males had an average head-fork length of 9.3 cm and gonadosomatic index (GSI) of 3. 

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