Ceratodontiformes

Lungfish are among the most intriguing of "oddball" aquarium subjects, being able to survive in the most extreme conditions. They are very ancient fish, having remained virtually unchanged for millions of years. Unlike its African relatives, N. forsteri cannot survive in completely dry conditions for long, although it does require access to atmospheric air to survive. It possesses only a single lung (the African species have paired lungs), which is formed via a modification of the swim...