Arowana Fish are freshwater bony fish of the family Osteoglossidae, also known as bonytongues.
In this family of fish, the head is bony and the elongated body is covered by large, heavy scales, with a mosaic pattern of canals. The dorsal and anal fins have soft rays and are long based, while the pectoral and ventral fins are small.
The name “bonytongues” is derived from a toothed bone on the floor of the mouth, the “tongue”, equipped with teeth that bite against teeth on the roof of the mouth.
The Arowana Fish is a facultative air breather and can obtain oxygen from air by sucking it into its swim bladder, which is lined with capillaries like lung tissue.
Behavior of Arowana
Arowana Fish are carnivorous often being specialized surface feeders. They are excellent jumpers;
Arowana Fish can leap more than 6 ft to pick off insects and birds from branches. Hence the nickname “water monkeys”. Arowana species typically grow to around 2 to 3 ft in captivity.
Several species of osteoglossids exhibit parental care. They build nests and protect their young after they hatch.
All species are mouthbrooders, the parents holding sometimes hundreds of eggs in their mouths. The young may make several tentative trips outside the parent’s mouth to investigate the surroundings before leaving permanently.
The Arowana Fish usually takes three to four years to reach sexual maturity.
Depending on the classification system used, there are 10 types of arowana commonly kept as pets; 4 from Asia, 3 from South America, 2 from Australia and 1 from Africa