The SEAFDEC Secretariat through the SEAFDEC-Sweden Project organized the Experts Group Meeting on Stock Status and Geographical Distribution of Anchovy, Indo-Pacific Mackerel and Blue Swimming Crab (AIB) Species in the Gulf of Thailand for better understanding of these trans-boundary AIB species and development of workplans for the sustainable management of such species. Held from 22 to 23 September 2016 in Bangkok, Thailand, the Meeting was attended by representatives from the Gulf of Thailand countries, namely: Cambodia, Malaysia, Thailand, and Viet Nam as well as resource persons from the Department of Fisheries of Thailand and academic institutions in Thailand. Senior officials and staff from the SEAFDEC Secretariat, MFRDMD and TD also attended the Meeting. After the presentations and deliberations, understanding of the participants on the status and distribution of these three major of trans-boundary species in the Gulf of Thailand (GOT), namely: the short-head anchovy (Encrasicholina spp.), short mackerel (Rastrelliger brachysoma) and blue swimming crab (Portunus pelagicus) had been enhanced while the key issues on data collection of the said species were identified. The Meeting also agreed that the Standard Operation Procedure (SOP) for Data Collection and Analysis – Information Collection for Trans-boundary Fishery Resources in the Gulf of Thailand (SOP) developed during the 2015 Fifth Meeting of the Gulf of Thailand Sub-region should be adopted by the GOT countries in order to harmonize the data collected and compiled. Moreover, the Meeting also came up with short- and medium-term plans for better understanding of the stock structure of AIB species in the GOT and development of measures for the sustainable management of these economically-important species. The results of the Experts Meeting would be used as inputs for discussion during the forthcoming Sixth Meeting of the Gulf of Thailand Sub-region scheduled before the end of 2016.