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This study, conducted from February 7 to 25, 2023, at the Fishing Gear Materials laboratory within the Department of Fisheries Resource Utilisation, Faculty of Fisheries and Marine Sciences, Riau University, employed an experimental methodology conducted in a controlled laboratory setting. A total of 40 fish samples, specifically Kepar fish (Belontia hasselti) samples, with an average size of 11 cm and a standard deviation of ± 0,80768, were utilized. The B. hasselti, recognized for its substantial economic value as a freshwater species. This study aims to comprehensively evaluate swimming speed and endurance. The study revealed that sustained swimming speed of B. hasselti ranged from 1,94 to 2,21 Bl/sec, with a maximum sustained speed recorded at 2,21 Bl/sec. In addition, prolonged swimming speed varied from 1.94 Bl/sec to 6,98 Bl/sec, while burst swimming speed reached 6,20 Bl/sec. An in-depth analysis of the relationship between swimming speed and swimming endurance in B. hasselti indicated a negative correlation, supported by a coefficient of determination (R²) value of 0,5336. This observation substantiates that the swimming endurance diminishes as swimming speeds increase. Consequently, a higher swimming speed is inversely related to the swimming endurance of B. hasselti. [ABSTRACT FROM AUTHOR]

This exercise aims to discover the Impact of Physical Education, Learning Sports, and Health on Body Mass Index and Physical Fitness Before and During the Covid 19 Pandemic at SMP Negeri 1 Losari Cirebon. Comparative research design with a research sample of 120 students. The sample in the study was taken by total sampling. The test instrument for measuring body mass index is measuring body weight with a kilogram scale and height with a meter in cm. Meanwhile, physical fitness is measured by the bleep test. The results of the study showed (1) There was an impact of learning sports and health physical education on body mass index before the covid 19 pandemic at SMP Negeri 1 Losari Cirebon (2) There was an impact of learning physical education sports and health on physical fitness before the covid 19 pandemic at SMP Negeri 1 Losari Cirebon.

Eel fish (Anguilla bicolor) is a catadromous fish, the migration of eels from rivers (fresh water) to sea water can be disrupted if there are transverse structures such as dams. This is because the speed of water currents across buildings is higher, whereas eel fish are not active swimmers, so a fishway is needed to facilitate the eel fish migration process. Fishway construction requires several information such as swimming patterns, speed and swimming endurance. This research aims to describe the swimming patterns of elver stage eels, measure the swimming speed and swimming endurance of elver stage eels in different current conditions. Next, formulate the swimming performance of elver stage eels related to the need to design an appropriate fishway. This research was conducted at the Fish Behavior Laboratory, PSP-FPIK Department, IPB. The results of the research show that the swimming pattern of the elver stage eel is the Anguilliform type, the sustained speed of the eel fish is ≤ 0.91 TL/second, the prolonged speed of the eel fish is 1.57-1.82 TL/second, and the burst swimming speed the speed of eel fish is ≤2.7 TL/second. Based on this data, the fishway design that suits the prolonged swimming speed of eel fish is the fish lock type which can be made with a slope of 20º accompanied by water discharge range 59 ml/secand speed current 30 cm/sec. [ABSTRACT FROM AUTHOR]