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¹ Central Fisheries Research Institute, P.O. Box 129, 6001 Trabzon, Turkey Viewed : 4112 - Downloaded : 3804 Feeding and growth studies were conducted to define the basal nutritional requirements of juvenile Black Sea turbot (formerly Scophthalmus maeoticus or Psetta maeotica). First, diets with different feeding stimulants were tested on P. maxima. Inosine, alanine, and glutamic acid were effective feeding stimulants. A combination of 0.9% L-glutamic acid and 0.1% inosine had the same effect as 0.27% inosine. Second, it was found that the nutritional value of diets was significantly affected by the pH of the diet; the optimum for turbot was pH 7.1-7.5. Keywords : fish nutrition