Sorry but that pic looks fake to me. If you look closely the fishes teeth look a lot like a humans teeth, and also wikipedia is not a reliable source. ANYONE can go on wikipedia and say whatever they want even if what they say is not true or is irrelevant or both. Also this may seem like a newbie question and it may be but do fish even have tongues? Because I can't think of any fish that has a tongue (I am excluding the fish in the pic because I don't believe that this pic is real). But really, LOOK at the teeth on that fish and tell me they don't look like a humans teeth.