World aquaculture has reached total production of more than 82 million tons, and Vietnam stands as the fourth largest aquaculture producer in the world with a total production of 4.124 million tons (FAO 2020). Aquaculture is increasingly diverse and innovative, with different species, water environments, culture systems, and levels of intensification to meet typical needs and conditions. However, aquaculture is now also challenged by environmental pollution, diseases, markets and especially climate change and saltwater intrusion. The concerns of climate change, saltwater intrusion and its impacts as well as solutions for adaptation in aquaculture around the world have been studied and are well documented (Cochrane et al. 2009, Shelton 2014, Barange et al. 2018).