Fenneropenaeus chinensis is a large fast-growing prawn. It is adaptable to lower temperature than most other penaeid shrimps. F. chinensis is one of the most important cultured aquatic species in the Yellow Sea and Bohai, China.

The genome of F. chinensis is sequenced and de novo assembled for comparative genomic analysis with the previously sequenced Litopenaeus vannamei. We identified the potential mechanisms of SSR expansion, and their evolutionary and functional roles during adaptive evolution, which provide a new view of the ways for SSR expansion and make SSRs as new key elements for the genome evolution in SSR-rich species.