New insights from nuclear and mitochondrial markers on the genetic diversity and structure of the Indian white shrimp Fenneropenaeus indicus among the marginal seas in the Indian Ocean.

•8 distant sampling sites of F. indicus divide into four genetically different stocks.•Genetic distance is not determined by geographical distance between populations.•Migration, larval dispersal and habitat geography leads to stock structuring.•Stable populations without recent bottleneck.•Congruent results from nuclear and mitochondrial markers.