The purpose of this research is to determine the growth pattern of Barb (Barbodes balleroides) in the Jatigede reservoir, Sumedang regency Province of West Java at the period of inundation. The research was conducted using the survey method in April and June 2016. Fish identification, and data analysis was performed at Laboratory of Aquatic Resource Management Padjadjaran University. Data analysis included: size distribution, the length and weight relationship, and the condition factor using the method of Fisheries Biology. The largest groups of Barb were caught in April (sized 128-145 mm and 146-163 mm, 25% each) and June (sized 146-160 mm, 53%). Barb growth pattern in April follow the regression equation of y = 2,8753x – 4,5568 b = 2,8753, W= 3.10-5. L2,8753, whereas in June y = 2,8105x – 4,3927, b = 2.8105, W= 4.10-5. L2,8105. The pattern of growth was allometrically negative, indicating that growth in length was greater than growth in weight. Based on the present data, it can be concluded that Barb population caught in the Reservoir at the beginning of Jatigede inundations consisted of 6 - 7 size classes. Consideration for a correct environmental management are reported.