Gnathocharax
Gnathocharax steindachneri, also known as the arowana tetra,[2] is a species of characin fish found in tropical freshwater habitats in the Orinoco and Amazon Basins of South America.It is also found as an aquarium fish.[3] It is the sole member of its genus.[4] It reaches up to 5 cm (2.0 in) in length.This Characiformes-related article is a stub.