This study provides a stock assessment of the Yellowfin tuna (Thunnus albacares) caught mostly by Long Line (LL), Purse Seine (PS), and Hand Line (HL) fisheries, focusing on a single species and multiple fisheries (1x3) of the Fisheries Management Area (FMA) 572 in West Sumatra waters. Furthermore, this study analyses the standardized fishing efforts for those three fisheries using general linear model. Based on the Gompertz growth function, a surplus production model of Clarke-Yoshimoto-Pooley (CYP) is used in order to determine the effort and catches at sustainable levels, allowable biological catch (ABC) and associated fishing effort. The maximum economic yield is estimated using a bioeconomic model. This maximizes the economic potential and associated fishing activities. As part of the study, the economic interactions between the LL, PS, and HL are also examined, as well as a comparison of the net profits obtained from each of the three estimated ABCs is carried out. Moreover, the results of this study suggest that the total allowable catch for a single species and multiple fisheries is necessary to maintain Yellowfin tuna stocks in West Sumatra.