African lungfishes are elongated, eel-like fishes, with thread-like pectoral and pelvic fins. They can either swim like eels, or crawl along the bottom, using their pectoral and pelvic fins.The largest species reach about 200 centimetres (6.6 ft) long. African lungfishes are the genus Protopterus and constitute the four species of lungfish found in Africa. Protopterus is the sole genus in the family Protopteridae.