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Abstract IN THE PRESENT INVESTIGATION ,SOME BIOLOGICAL CHARACTERISTICS OF MALES ,FEMALES AND COMBINED SEXES OF B .BAYED AND B. DOCMAC FROM THE NILE AT ASSIUT ,EGYPT WERE STUDIED.IN BOTH SPECIES,THE LENGTH-WEIGHT RELATIONSHIP WAS ISOMETRIC AND SEXUAL DIMORPHISM WAS REVEALED IN TERM OF WEIGHT RELATIONSHIP WAS ISOMETRIC AND SEXUAL DIMORPHISM WAS REVEALD IN TERM OF WEIGHT |