There are fish in Qinghai Lake, that is, the people of Qinghai said Huangshui (sound the same) fish, this kind of fish is very fresh and delicious flavor, steamed and braised are very delicious.
But due to overcapture, this fish is now endangered, so the state banned fishing.
There is a saying in Qinghai that Tibetans don't eat fish, but it's generally not pure Tibetans who do.