At moderate salinity, freshwater Penaeus vannamei and seawater Penaeus vannamei can coexist.

Some shrimps are from euryhaline, such as the most famous Penaeus vannamei, and their adaptation range is -35‰. Shrimp seedlings can be raised in pure fresh water by desalination.

According to incomplete statistics, Litopenaeus vannamei accounts for 65% of all cultured marine prawns, among which Litopenaeus vannamei cultured in fresh water accounts for 8% of all cultured prawns in China.