ABSTRACT Fish cultivation activities in floating net cages (KJA) produce residual feed and residual metabolism. This study aims to look at the fertility status and influence of floating net cages (KJA) on the fertility rate of the waters around the Dam Site of PLTA Koto Panjang Reservoir. Sampling was conducted at three stations, namely station 1 (slightly KJA), station 2 (medium KJA), and sta…