The arapaima is one of the largest species of freshwater fish in the world. It has seen very little change in over one hundred million years, and as such it is often referred to as a living fossil. When fully grown these fish reach around 2-3 m in length; however, arapaima as long as 5 m have been confirmed in the past.
- Scientific Name
- Arapaima gigas
- Classification
- Order: Osteoglossiformes, Family: Osteoglossinae
- Habitat
- Amazon basin
