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Abstract
Sepuk Laut Village has high capture fisheries potential, especially freshwater prawns. This study aims to analyze freshwater shrimp's abundance and species composition and the relationship between freshwater shrimp abundance and water and substrate quality in the China Strait River. The research method used is systematic sampling with random start. The results obtained were 354 individual freshwater shrimp from 4 species belonging to the Palaemonidae family with the Macrobrachium genus, namely Macrobrachium equidens, M. rosenbergii, M. mirabile, and M. nipponense. The highest species abundance was M. equidens (D 2620 ind/km2), while the lowest species abundance was M. nipponense (D 828 ind/km2). The abundance of freshwater shrimp associated with water and substrate quality showed a strong to robust correlation (r >0.7) on several parameters, such as current speed, depth, brightness, and water temperature in the four identified freshwater shrimp species. The abundance of freshwater shrimp in the China Strait River is concentrated in the middle of the river, which is 2 km from the river mouth, dominated by Macrobrachium equidens.
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