Search

arowana

Osteoglossids are basal (primitive) fish from the lower Tertiary and are placed in the actinopterygiid order Osteoglossiformes. There are ten described living species: three from South America, one from Africa, four from Asia, and the remaining two from Australia.

Arowanas, also known as aruanas or arawanas are freshwater bony fish of the family Osteoglossidae, sometimes known as "bony tongues." In this family of fishes, the head is bony and the elongate body is covered by large, heavy scales, with a mosaic pattern of canals. The dorsal and the anal fins have soft rays and are long based, while the pectoral and ventral fins are small. The name 'bony tongues' 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 fish can obtain oxygen from air by sucking it into the swim bladder, which is lined with capillaries like lung tissue. The arapaima is an "obligatory air breather".[

pets

No arowana pets yet!

pictures

No arowana pictures yet!

videos

No arowana videos yet!

owners

No arowana owners yet!

blogs

No arowana blogs yet!



This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Arowana".