A prehistoric-looking fish in the family of Osteoglossidae, also known as 'bony tongues', like the Arapaima. It has an elongated body, tiny tail, huge scales and bony trapdoor mouth. Arowana get up to 15lbs. Great shallow water species to target with topwater lures, even plastic frogs. They are extremely acrobatic, even swimming backwards when needed.
An Arowana's tongue is equipped with teeth that bite against more teeth on the roof of the mouth. An interesting fact is in low oxygenated situations, just like the Arapaima, it can also breath air and can obtain oxygen from air by sucking it into its swim bladder, which is lined with capillaries like lung tissue.
They tend to gang up in quiet lagoons and under overhanging trees in the shade. Arowana are often seen jumping in the trees (hence the name Monkey Fish) to catch birds, insects, small rodents and even snakes and lizards. These fish hit topwater lures with abandon and can also be caught on flies, jigs and minnowbaits.