Description
The African Arowana, Nile Arowana (Heterotis niloticus), is a species of bonytongue. Despite being called an “Arowana”, the African Arowana is more closely related to arapaimas, the only other members in the Arapaimidae family, than the South American, Asian and Australian arowanas in the Osteoglossidae family (Arapaimidae is sometimes included in Osteoglossidae). Compared to these, the African Arowana has a more terminal mouth and is the only one that feeds extensively on plankton.