A perusal of the published reports on zooplankton biomass in the Indian Ocean, reveals that due to non-availability of data from reportedly productive neritic waters, the projected value of biomass of 519 million tonnes become underestimate by more than 90 million tonnes. Similarly, as deduced from the data on biochemical composition and energy content, it is evident that zooplankton of the Indian Ocean, contains on an average 2.7% organic carbon which is less than half, as compared to the widely used value of 6.5%. Thus, it necessitates the revalidation of zooplankton production based, exploitable fishery resources in the Indian Ocean