Behavior and swimming performance of local fish in the ecosystem waters of rivers, oxbow and peat swamps

The four fish species, Trichogaster pectoralis, Barbodes schwanenfeldii, Osphronemus gouramy, and Wallago leeri have the same body size, representing different habitats. Therefore, this study aimed to determine species swimming abilities speeds, including sustained, maximum prolonged speed, burst speed. were brought using oxygenated plastic bags Aquatic Resources Utilization Laboratory at Riau University. Then it was acclimated in an aquarium measuring 100×50×50 cm with aeration filtering system maintain water quality. groups of forced swim channel flume tank, current speeds for each individual tested. activity recorded a high-speed video camera (Casio HS Exlim, EX-ZR400, Casio Computer Co. LTD, Japan). results showed that speed B. schwanenfeldii higher than O. T. W. leeri. sustained is about 5.1 BL/s, 14.2 BL/s Meanwhile, gouramy (1.6 BL/s) 7.2 BL/s. pectoralis 1.6 5.7 In addition, only 0.5 2.4 ability these influenced by morphology tail fin, shape, habitat where they live.