Dominant fish species in submerged floodplains and the adjacent river in the Buaya Lake, Indragiri River basin, Sumatra Island, Indonesia

According to the analysis results, the length and weight of fish living in the Buaya Lake and outlet river are smaller than those living in the Indragiri River. [...]valid data on fish stocks is necessary for evaluating over-exploitation of fishery resources, in areas where the fish management on peatlands has not been optimally implemented, including the Buaya Lake ecosystem. [...]rapid action to collect data on fish stocks and the breeding season is needed. Temperature affects swimming activity, speed, and endurance (Nofrizal et al 2019; Nofrizal & Arimoto 2011; Nofrizal et al 2020), and pH affects physiology, stress status, and growth performance (Mota et al 2018). [...]temperature data is required as an indicator of fish habitats in the waters of the study location. Biologically, the relationship between the length-weight of the individual is not similar in each species, due to physiological factors. [...]the measurement of length or weight can be used to predict the length-weight relationships (LWRs) by utilizing the best formulation.