Author : Mac Nhu Binh

Summary : The study was conducted to assess the sustainability of polyculture aquaculture model in five communes in Phu Vang district, Thua Thien Hue Province Vietnam. Water quality parametrs included in the study were: pH, temperature, salinity, DO, BOD, COD, TDS, NH3, NO3, turbidity, phosphates and heavy metals. Socio-economics situation of the respondents and natural conditions of the study area in Phu Vang district, Thua Thien Hue province were described and assessed. The study showed that the equality of water for aquaculture in Phu Vang such as: pH, salinity, DO, BOD. TDS etc., were within Vietnam's Water Quality Standards for Aquaculture purposes. COD concentration, however, exceeded the permissible level. A polyculture model for sustainable aquaculture for small farmers in Hue province, Vietnam was developed form the results of the study. Three species selected for the polyculture model were: Tiger black shrimp (Penaeus monodon), Rabbitfish (Siganus guttatus), and Kinh (Siganus canaliculatus). Using the model has significantly increased profit margins to more than 200 million VND/ha for small aquaculture farmers and has also contributed to the development aquaculture in Phu Vang district.