Did you know that the lung fish can live out of water for as long as four years?!
Lungfish are freshwater fish belonging and some people call them salamanderfish. Lungfish are best known for their ability to breathe air, and their very well-developed internal skeleton. Today, lungfish live only in Africa, South America and Australia.
Lungfish have a highly specialized respiratory system. Their lungs are connected to the larynx and pharynx without a trachea. Other species of fish can breathe air using modified, vascularized gas bladders,but the lungs of lungfish are subdivided into a lot of smaller air sacs, maximizing the surface area available for gas exchange. Most lungfish species have two lungs, except for the Australian lungfish, which only has one.