Asian carp in North America

Asian carp, a group of invasive species of fish introduced into North America, pose a major threat to the ecology, environment, economy, and way of life in the Upper Midwest and Great Lakes region of the United States and Canada. The term refers to a group of xenocypridid fish species originally native to East Asia, of which several are known to be invasive in the United States, and represent the most urgent potential danger to the ecology of the Great Lakes.

Source: Wikipedia — Asian carp in North America (CC BY-SA 4.0)