What is the parasite that replaces fish tongue?
What is the parasite that replaces fish tongue? tongue-eating louse Instead, it has a tongue made up of a group of parasites known as a tongue-eating louse. In the picture, the fish is held up to the camera with its mouth wide open showing the strange foreign 'tongue' inside. How common is tongue lice? Fortunately, in humans, parasites the size of the tongue louse are rather rare. Not much else is known about these little critters, but they do have an influence on the lives of humans. What is fish tongue? Yes, most fish do have tongues, but they aren't...