Fishery aquaculture waste water cause shrinkage Waste water resulting from toxins might make wastewater section Pronto dead fish caused by low oxygen dissolved in water, even though it does not cause immediate death but could destroy the fish, plants and tiny water animal as food by the larvae of fish and make fish food deficiency causing damage to fisheries and economy. Oxygen dissolved in the water if the decrease in the number of lots in the Division immediately may cause fish death. in addition, the waste water also destroy sources of fish lay eggs due to the sedimentation of suspended matter in wastewater of fish spawning areas are covered, which is halt species extinction fish.