All living things will carry bacteria, and frozen wheat ear fish, as a kind of living things, will naturally carry bacteria. Because it is frozen, bacteria reproduce slowly.
So I recommend cooked food. Even if eaten raw, it is recommended to use it with vinegar and mustard for sterilization.
Maisui is a small freshwater fish. Often live in quiet shallow waters. It is a common small fish in rivers, lakes and ditches on the flat land. Young fish feed on rotifers and so on. When they grow to about 25 mm, they become chironomid larvae and larvae. Cold tolerance and strong adaptability to the pH value of water. Native to China (south to Yunnan, Guangxi, north to Heilongjiang and west to Lanzhou), Japan, South Korea, North Korea, Mongolia and Russia.