Lake Superior other Great Lakes fish, populations have also been affected by the accidental or intentional introduction of foreign species such as the sea lamprey and Eurasian ruffe. Accidental introductions have occurred in part by the removal of natural barriers to navigation between the Great Lakes. Overfishing has also been a factor in the decline of fish populations. Lake Superior Lake Superior (; ), the largest of the Great Lakes of North America, is also the world's largest freshwater lake by surface area, and the third largest freshwater lake by volume. The lake is shared by the Canadian province of Ontario to
Bosten Lake the lake. In the 1970s, these species become major targets of the fishing activities. Since 1978, the European perch has been the dominating species in the catches from Bosten Lake. Bosten Lake Bosten Lake (, Uyghur: / / "Baghrash Köli / Baƣrax Kɵli", Chagatai: "Bostang") is a freshwater lake on the northeastern rim of the Tarim Basin, about east of Yanqi and northeast of Korla, Xinjiang, China in the Bayin'gholin Mongol Autonomous Prefecture. Covering an area of about (together with adjacent small lakes), it is the largest lake in Xinjiang and one of the largest inland freshwater lakes in China.