The walking catfish (Clarias batrachus), also known as the magur or pla duk dam, caused a panic among fish farmers in Florida when it began invading their aquaculture farms and feeding on fish stocks. Dubbed "Frankenfish" by the media, the walking catfish breathes air and is capable of making short migrations across land. When their food supply runs out, the walking catfish simply migrates, marching like an army, sometimes thousands at a time, to the next food supply. When they stumble upon a fish farm, the effects can be devastating as they are very aggressive predators. If they go undetected, they can wipe out a farmer's stock of fish in a relatively short time. Even killing a pond by pumping down, spreading active lime, and using chlorine is not guaranteed to stop the spread of these fish as they are quite capable of burying themselves deep in the mud and resurfacing when conditions are more favorable. A native of Southeastern Asia, the walking catfish is now established in Florida and has been reported in numerous other U.S. states including California, Connecticut, Georgia, Massachusetts, and Nevada. In response to the walking catfish, fish farmers have begun to erect barrier fences to protect their ponds.