The Lepisosteus is a primitive species of fish that can only be found in rivers and water lakes tranquilas of central America (Mexico and Guatemala). Voracious natural predators, possess the prolongated bodies and thick scales and can arrive up to 45 kg. Fish-lizards or fish-alligators are called popularly due the similarity of the snout between the two animal species.
The fish-lizard is a sort of four species of primitive ósseos fish, enters oldest than still they exist in the present time. They already were here when the human beings we arrive the Land and possibly still are when we will be extinct. This species was introduced in Thailand and caused a serious ecological disequilibrium.