A three-foot-long fish that can breathe air, “walk” on land and survive for days out of the water. But the northern snakehead ...

By Victor Mather The northern snakehead — a sharp-toothed fish that looks like a horrifying hybrid of fish and snake — is spreading throughout the waters of the United States. That’s not good.

The fish can also breathe air, allowing them to survive for several days out of water if their skin stays moist.