1960. According to the query Baidu encyclopedia information shows that the blackfish is native to Europe in the Aral Sea, the Black Sea, the Caspian Sea, and the Baltic Sea water system of rivers and lakes, introduced from Russia to China in 1960, the Ili River Balkhash Lake system and the ErqiShi River system, in 1985 by the Lake Xingkai Lake into the Heilongjiang River Basin, and after 1993, has been introduced to many provinces such as Shandong, Hubei, Beijing, Tianjin and so on.