Silver arowana

The silver arowana is a large, primitive surface-dwelling fish of the family Osteoglossidae, native to the Amazon basin and other South American river systems. It has a long, sleek silvery body, large scales, an upturned mouth with two barbels, and an unmistakable gliding swimming style; it is a capable jumper that catches prey from the surface. It is a predatory, semi-aggressive fish that will eat anything it can swallow and can be territorial with its own kind. It is generally kept singly, or in a very large tank as part of a carefully chosen large-fish community. Because of its adult size, it demands a very large aquarium with a tightly secured cover, as it leaps powerfully. It is a carnivore taking insects, fish, shrimp, and prepared carnivore foods; a varied diet helps prevent drooping-eye and deformities. It is a mouthbrooder, the male carrying eggs and young, though breeding rarely occurs in home aquariums.