In the Kintambo Rapids of the Congo River, on the Brazzaville side, during the dry season, when the rapids are readily accessible by fishermen looking for this fish (mbessé, in the local language).
Osteoglossiformes (Gk. "bony tongues") is a relatively primitive order of ray-finned fish that contains two sub-orders, the Osteoglossoidei and the Notopteroidei. All of the living species inhabit freshwater. They are found in South America, Africa, Australia and southern Asia, having first evolved in Gondwana before that continent broke up.