The Mystus nigriceps in Sungai Batang River, Indonesia are commercially exploited and they are vulnerable to destructive fishing methods, while morphometric characteristic of the fish is poorly studied. The fish were obtained from local fishermen. A total of188individualsof M. nigriceps consisted of 68 males and 120 females (103-195 mm total length and 15-72g weight) were investigated. Female had total length, body weight and body depth greater than male (P < 0.001). Dealing with the catches, more than 22% of male falls within the range of 130 and 149 mm TL, and 30.00% of female found between 260 and 279 mm TL. The heaviest male (19.12%) and female (23.33%) weighed between 30 and 49 g. The ratio of body weight to total length of M. nigriceps in the present study was higher than other Mystus species from different geographical regions. The mean condition factor of female was significantly higher than male (P< 0.05) with the respective values of 1.28±0.13 and 1.21±0.12. The fish samples were in moderate condition and grew negatively allometric (b=2.5010-2.7154). Outcomes of this study could be useful for fisheries management and conservation measures in this river.