Wikipedia
Heterobranchus
Heterobranchus is a genus of airbreathing catfishes native to Africa. However, H. palaeindicus, the only known extinct species of the genus, was discovered in the Siwalik Hills, India, dating to the Lower Pliocene.
Depending on the exact species involved, fish of this genus reach from with H. longifilis being the largest strict freshwater fish in southern Africa, reaching SL and weighing up to .