Asian carp are a group of fish species native to Asia, including the bighead carp, silver carp, grass carp, and black carp. They were introduced to the United States in the 1970s to help control algae in fish farms. However, they escaped into the wild and have since spread rapidly through rivers and lakes. These fish are known for their fast growth and high reproductive rates, which allow them to outcompete native species for food and habitat. Their presence poses a significant threat to local ecosystems, particularly in the Great Lakes region, where they could disrupt the balance of aquatic life.