Top aerial view of Tilapia aquaculture fish farm in polluted Lake Batur, Bali

aerial tilapia aquaculture fish farm polluted lake batur bali caldera lake green water indonesia volcanic sediment sulfur agricultural runoff aquafarming lake health floating net cage oreochromis niloticus farm cage food business fish species volcano water pollution catchment agriculture polluted fish chemical fertilizer volcanic lake dead fish water contamination drone environmental impact aquaculture business aquafarm aquaculture industry southeast asia farming rural island water environment responsible farming birdseye south east asia