My research interest is mainly on the molecular ecology of the freshwater and marine water fishes, investigating the genetic diversity, genetic structure, phylogeography and phylogenetic of the wild populations. These studies form the base for conservation of species and recommendations on the population management strategy. It is also very interesting to study the phylogeographical relationship of aquatic organisms as it reveals palaeo-landscape with arrangements that shape intra species genetic patterns that are apparent nowadays through both the mitochondrial and nuclear DNA analyses. I have been working on fishes with different biology and behaviors (e.g. non-migratory vs. migratory, pelagic vs. benthic, amphibious vs. fully freshwater or fully seawater) such as the striped snakehead Channa striata, snakeskin gourami Trichopodus pectoralis, Pearse’s mudskipper Periophthalmus novemradiatus, longtail tuna Thunnus tonggol, two-spined yellowtail stargazer Uranoscopus cognatus, brushtooth lizardfish Saurida undosquamis and other species. My current researches extend over different regions of Southeast Asia and I look forward to deciphering the genetic variations, structure and distribution of aquatic organisms inhabiting these regions