Assessing the status of the stocks of neritic tuna species in the Indian Ocean is challenging due to the paucity of data. There is lack of reliable information on stock structure, abundance, and biological parameters. Stock assessments was conducted for Indo-Pacific king mackerel (Scomberomorus guttatus) in 2015, using data-limited methods (Martin & Sharma 2015). This paper provides an update to the C-MSY assessment (Froese et al. 2016) based on the most recent catch information. In addition, a length-based method for estimation of spawning potential ratio (Hordyk et al. 2014) was also applied to the available length composition data of the Indo-Pacific king mackerel from the gillnet fishery.