Dr. Zeb Hogan searches for the elusive wolf fish, navigating harsh terrain while avoiding heart-pounding encounters with anacondas, piranhas and vampire fish.

In Thailand, Zeb Hogan is on a mission to catch a monster snakehead, a fish in that looks more like a snake than a fish.

Dr. Zeb Hogan is on a mission in the Indian Himalayas to investigate reports of a Goonch, a huge catfish that stalks, attacks and kills people.