Evaluation of two tagging/marking techniques,and their practical application in Osteochilus hasselti C. & V. (cyprinidae) population estimates and movement at Subang reservoir,Malaysia

Experiments evaluate the effects of two tagging/marking techniques on Osteochilus hasselti C. & V. at Subang Reservoir, Malaysia. Based on suitability, the staple tag and fluorescent pigment were used in short-term studies on population estimates and movement of the fish respectively. The discrete population of Osteochilus hasselti at one sampling station, Garong Panjang, is 1709 individuals during the survey period. The marked fish exhibit limited movement. The average distance moved is 15 meters, with most fish heading upstream. The average maximum dimension of the movement range is = 46 ± 8 meters at night and = 28 ± 5 meters in the day.