The Asian carp invasion continues. Now North Dakota officials have confirmed the presence of a silver carp in the James River. State Game and Fish spokesman Lynn Schlueter says the silver carp was caught near LaMoure, in southeast North Dakota. He says wildlife officials are disappointed but not surprised that silver carp have entered the state. Schlueter says silver carp have migrated upstream on the James River through South Dakota in recent years. Silver carp, famous for leaping out of the water when startled by boat motors, are almost impossible to eliminate once they are established on a river system. In Minnesota, no established populations of silver carp, or its cousin, the bighead carp, are known to be here. However, individual Asian carp have been caught by commercial fisherman over the last several years. One bighead carp was caught in the St. Croix River in 1996 and another this year. Between 2003-2009, a total of six bighead carp have been caught in the Mississippi river between Lake Pepin and the Iowa border. Three silver carp (two in pool 8, one in pool 9) have been caught between 2008 and 2011. Populations of bighead and Silver carp are established in the Mississippi River and its tributaries downstream of pool 12 in Iowa.And this summer, water samples from the St. Croix tested positive for genetic material from silver carp, suggesting they may be in the river as far north as the dam at St. Croix Falls. But a commercial fishing operator and state fisheries employees failed to catch a single Asian carp after netting for nine days.