Abstract: Background and Objective: The study on length-weight relationship (LWRs) and condition factors has a great potential for effective management of a fish species. So the present study was aimed to explore the length-weight relationship and condition factors of a vulnerable fish species Cirrhinus reba. Materials and Methods: A total of 600 individuals of C. reba was collected from Padma River have been evaluated for the present study from five distinct stations during 1 year (From January to December, 2015). Length and weight of the individual fish were measured using a digital slide calipers and an electronic balance. Length-weight relationship was analyzed using the equation: W = a×Lb. Fulton (KF) and relative (KR) condition factors were determined using the equation: KF = 100 W/L3 and KR = W/a×Lb, whereas, relative weight (WR) was calculated using the equation: WR = (W/WS)×100. Results: Total length and weight of the individuals were found to vary from 6.60 -23.80 cm and 2.63-136.00 g, respectively. The LWRs for male, female and combine sex were found highly significant (p<0.01) with good linear regression close to 1 (r<1). Male fishes were found to show isometric growth, whereas, female showed positive allometric growth pattern. Relative condition factor (KR) and relative weight (WR) both were found to show significant (p<0.01) correlation with body weight of C. reba. Conclusion: It was concluded that there was a significant relationship between the growth pattern, length and weight of C. reba in different months. The stock of C. reba from Padma River were in declining trend. However, proper management of this fish species is recommended.