Tiger fish goliath, predatory species of fish weighing up to 154 pounds (70 kilograms) and up to 5 feet (1.5 meters), was recently featured in the new program Animal Planet - "River Monster." Widely known as a fierce-looking creature with sharp teeth, fish Goliath is just one example of a large variety of fish species that are found in the Congo River, and 80% of whom are no longer found anywhere else in the world.