Arapaima Gigas

Minimum Tank Size: 1000 Gallons
Care Level: Expert Only
Temperament: Semi-aggressive
Water Conditions: 75-82° F, KH 1-8, pH 6.0-7.0
Maximum Size: Not found :'( (These fish are known to be the biggest freshwater fish in the world)
Diet: Carnivore
Compatibility: Compatible with Redtail Catfish, Oscars, and other large South American fish
Origin: South America
Notes: The Arapaima Gigas is also known as the Pirarucu, and should be kept in a tank at least 1000 gallons. These fish like to jump, so a sturdy aquarium cover is a must. These fish must have plenty of room to swim since these fish are so large. These fish must surface to breathe, so some room above the water is needed. These fish will eat smaller fish, along with copped meat

Picture: http://www.anythingfish.com/images/Ted/PhotoGallery/ArapaimaGigas.htm
Info: http://www.liveaquaria.com/product/prod_display.cfm?c=830+1984+1985&pcatid=1985