Rezeki, Sri2013-01-212013-01-212013-01-21sumarnihttp://repository.unri.ac.id:80/handle/123456789/1550A study aims to understand the morphological and meristical characteristics, relative growth and condition factor of Trichogaster leeri has been conducted on April to Juni 2012. Fourty fishes (55-83 mm TL and 3,11- 6,47 gr) from the Tapung River and 27 fishes (62- 95 mm TL and 5,34- 11,35 gr) from the Faperika Dam were collected and measured. There were 13 meristical and 25 morphological characteristics have been studied. Meristical characteristics of the fins of the Tapung’s fish were as follows: D.V-VIII, P.9-14, A.XI-XIV.28-40, C.16-21 and those of the dam fish were as follow D.VI-VIII.7-9, P.8-13, A.X-XIII. 27-35, C.16-20 . The number of scales in the frontal area of the dorsal fin was 22-27, in the lateral line was 32-41, above the lateral line was 11-14, below the lateral line was 14-16, around the body was 46-64 and around the base of the tail was 24. There were 5 types of relative growth patterns of the morphological characteristic measured from the Tapung’ s fish and that of the FAPERIKA Dam was 6 types. Length-weight relationship of Trichogaster leeri from both sampling sites were negative allometric (in the Tapung fish, male b= 0.8786 and female b= 1,2899 and in the dam fish, male, b=1,3658 and female b=1,8358). There was sexual dimorphism, as dorsal fin height, anal fin height and caudal fin height of the females were higher than that of the males.otherTrichogaster leeriflood areasTapung Rivermorphological characteristicmeristical characteristicstudent Paper Post Degree