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Abstract: A 12-weeks feeding trial was conducted to investigate the effects of commercial cellulase enzyme products on the nutritive value of Canola Meal (CM) determined in angel fish fries. Nine isocaloric and isoprotein experimental diets (44% protein and 3500 kcal kg-1) were prepared by adding cellulase enzyme (0.50 and 1.00 g kg-1) at two different levels to feed including 7.20 and 35.99% canola meal instead of fish meal at basal diet. All diets were fed ad libitum. Weight gain, feed conversion ratio, body composition and nutrient digestibility were measured. High canola + enzyme diet gave significantly lower growth rates (1.51±0.02 g) (p<0.05). The low canola diet also resulted in higher weight gain but adding of cellulase enzymes in different ratios to diets showed no effect in growth parameter and nutrient digestibility.