Asian Arowana Fish
And the population of Asian arowana fish Description - After yesterday we share about fish dolphin, now we will discuss and review the Arowana fish. Arowana (Arowana) Asian (Scleropages formosus) consists of several varieties of freshwater fish phenotypic geographically distributed throughout Southeast Asia. While most consider the different varieties belong to a single species, working with Pouyaud et al. (2003) and differentiate these varieties into multiple species. They have several other common names, including Asian bonytongue, dragonfish, and a number of special names for different color varieties. Arowana fish Originally from Southeast Asia, Asian arowana inhabit blackwater rivers, slow-moving waters flowing through the swamp forests and wetlands. Adults feed on other fish arowana, arowana fish while juvenile insects. This popular aquarium fish have special cultural significance in areas influenced by Chinese culture. Dragonfish name comes from their resemblance to the Chinese dragon.
This popularity has both positive and negative effects on their status as endangered species punah.Seperti all members Osteoglossidae, Asian arowana very adapted to fresh water and not be able to survive in the sea. Therefore, their spread throughout the islands of Southeast Asia suggests they diverged from other Osteoglossids before the outbreak of the continent was completed. Genetic studies have confirmed this hypothesis, suggests that the ancestors of the Asian arowana arowana ancestors diverged from Australia, S. and S. leichardti jardinii, about 140 million years ago, during the Early Cretaceous period. This difference occurs on the east side of Gondwanaland, with the ancestors of the Asian arowana conducted in the Indian subcontinent or smaller mainland Asia. Morphological similarity of all species Scleropages shows that small evolutionary changes have occurred recently for the first .Gambaran ancient fish of this species was published in 1840 by the German naturalist Salomon Müller and Hermann Schlegel, under formosum Osteoglossum name, although later this species was placed The Scleropages with the name S. formosus.
Asian Arowana grow up to 90 cm (35 in) in total length [7] Like all Scleropages, Asian arowana has a long body,. Large, elongated pectoral fins, dorsal and anal fin is located far back on the body, and tail fins are much larger than their South American relative, the silver arowana, Osteoglossum bicirrhosum. Arowana mouth oblique shaped with a very wide gape. The lower jaw has two barbels protruding at one end with a fat gills. Asian Arowana bear teeth on many bones of the mouth, including the jaws, vomer, Palatines, pterygoids, parasphenoid, and tongue. Asian arowana scales are large, cycloid, and, in some varieties, colored metal, with a typical mosaic pattern of raised ribs. Scale laterally arranged in horizontal rows numbered from the most ventral (first level) to the dorsal (level five), with the dorsal scales designated the sixth level. Asian Arowana distinguished from Australia congenerics S. jardinii and S. leichardti by having fewer (21-26) lateral line scale (versus 32-36 for the Australian species), chest and pelvic fins longer and longer snout anterior .Hijau green arowana dark on the back, silvery or golden green on the sides, and silver or whitish on the ventral surface, with dark greenish or bluish patches visible through the lateral scale. In mature fish, the upper eye and head behind the eyes are bright emerald .berwarna dark gray on the back and silver on the sides, with a dark ring patches on the lateral scale and a silver or whitish belly. In specimens yellow - tail, fin membrane yellowish with dark gray rays. In specimens gray tail, fins dark gray uniform.
That information about this beautiful arowana fish, hopefully this article can be useful
