Although, the majority of shrimp / prawns available here are seawater species, which are easier to farm, we do also get freshwater types.
Most popular, I guess, are 罗氏虾 (luó shì xiā), Litopenaeus vannamei, Roche shrimp, also sometimes known as Malaysian shrimp, despite being native to Ecuador. They have been introduced widely throughout SE Asia and down to Australia. In fact, they are euryhaline, meaning they are just as happy in either fresh or seawater (which leads them to being called Pacific white shrimp in places. Here, they are mainly freshwater.
These are the largest shrimp able to tolerate a freshwater environment, reaching up to 40 cm in length, although more often retailed at between 11- 17 cm. They are brownish-blue in colour, thin shelled and their heads take up more of the bulk of than those of regular shrimp. They are also meatier than strictly sea shrimp.
Usually sold live, they are around $10 to $12 USD for 500g / 1.1lbs.
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