Are the waters of Yellow River, Yangtze clean enough for freshwater fish farms? Could be a huge boon for China's food self sufficiency.
But then there are cargo ships all along the Yangtze, probably wouldn't want marine diesel fish
Freshwater fish farms themselves could be a serious source of pollution. And they use precious land and freshwater resources. International water is open to everyone. Sea water is free. Offshore saltwater fish farming is just superior in every way.
Chinese now are more and more accepting of sea fish which usually has less bones. Chinese supermarket now all have easy to cook frozen fillets. I think fresh water fish will gradually become restaurant only dishes.
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