The 11th Regional Aquafeeds Forum (RAF11) is an important international event of Aquafeed industry in the South East Asia. It is a continuous event among series of RAFs, initiated by ACIAR, under project FIS/2006/141. The theme that RAF11 focus on is Optimizing utilization of Feed Ingredients and Additives for Sustainable Aquaculture. The event takes place in Nha Trang from 25 to 27 September 2019 and is organized in collaboration with Research Institutes for Aquaculture No 1, No 2 and No 3; universities including Nong Lam University, Can Tho University, and Vietnam National University of Agriculture (VNUA). The RAF11 has attracted participants whom are aquaculture nutritionists, feed mill managers, feed formulators, feed ingredient suppliers, key farmers and press representative in the South East Asia region. At this important event, the TUNASIA project was introduced to more than 100 participants all over the South East Asia region.