With world's total production of 171 million in fisheries and aquaculture (FAO 2018), of which 80 mmt is contribution from aquaculture. Ever increasing human population and increase in demand for fish and fishery products, aquaculture will play major role in ensuring supply of required high quality protein, through sustainable development of aquaculture. To achieve this, there are challenges, i.e., lack of a sufficient number of genetically improved species, lack of species-specific feeds, high mortality due to diseases and pollution of ecosystems. Development of sequencing technologies has helped to tackle these challenges. As the reference genomes are developed for numbers of important aquaculture species, candidates genes can be identified for economically important traits. Dense single nucleotide polymorphism (SNP) panels would be useful for accurate genetic evaluations for traits that are difficult to measure in selection candidates, such as disease resistance and carcass quality, by integrating genome-wide SNP information or genomic selection.