Abstract

• The zooplankton samples from 23 stations in the waters off Tanintharyi Region were collected by R/V DR. Fridtjof Nansen (August – September 2018). The 209 species and 35 taxa of zooplankton were observed in the present study area. Copepods were the most abundant and dominant species at all stations. Acrocalanus gibber, Paracalanus parvus, P. aculeatus, Nanocalanus minor, Undinula vulgaris, Acrocalanus longicornis, Corycaeus andrewsi, and Canthocalanus pauper were very common in the study waters. The highest species composition was recorded (141 occurrences) at St 854 and the most abundant (6622 no/m3 ) at St 796. Zooplankton diversity of (H' > 3.9) were represented high values in three fish spawning grounds of the Tanintharyi Region. The species diversity of H', D' and E' values were usually high at stations close to the coast.