Scleropages formosus is the scientific name of one of most popular fishes in the world; it has many names between people like dragon fish, Asian bonytongue, or Asian arowana. Its scientific name may be difficult in pronunciation for some people, so they prefer nick names.
Scleropages formosus considers from too friendly fishes to keep in an aquarium, many people prefer raising it.
Hermann Schlegel, and Salomon Müller were the first who named this fish, although its definition was by S. formosus.
The Asian arowana is about 90 cm long, it has long and wide fins in front, and back, also it has larger fin on the back side. Also it has inclined big mouth, with flat outstanding bottom jaw, that has two of big barbels, for which it was called the dragon fish. Asian arowana has a collection of teeth on both jaws, and the chin.
The dragon fish’s body is large full of strong scales arranged carefully, these scales can make big differences between several species.
Scleropages formosus has many different colors like green, red, and attractive gold. These colors are mixed in a very attractive way started from red, or green on the back then another degrees beside, the mix is so amazing like shown on photos to the extent that can rob your eyes. The tall of this fish can be about 91 cm, or quit less.
The color of eyes changed to be emerald while growing old, the mix of colors in these fishes can vary according to species, and also according to the place they are in!! Which mean the location like sown in the list below:
• The silver Asian: it can be a part of green degrees, but take care it isn’t a silver arowana. It lives in any area of Borneo Island with different species as yellow tail silver, grey tail silver or Pinoh arowana.
• The red-tailed golden: this kind can be found a lot in Indonesia, and north Sumatra.
• The chili red, blood red, red, or super red: it can be found only in west Indonesia near lakes, or on the top of the Kapuas River.
• The green: which can be found more than others, it lives in Malaysia, Thailand, Vietnam, Cambodia, Myanmar, and Indonesia.
• The Bukit Merah blue, blue Malayan, or the gold crossback: the main home of these fishes is Bukit Merah in Perak, Peninsular Malaysia, and Pahang.
You may notice that there are many classifications for the Scleropages formosus, and everyone depends on different color factors.
The Asian arowana lays about 30 to 100 eggs at one time, but this is normal, that strange thing is that these eggs are kept on the male’s mouth for month at least until it hatches, this is called mouthbrooding, and it the reason for the deeper, and larger males’ mouth.
Also after eggs hatching the babies and even larvae keep staying at male’s mouth for three, or two months more.
Although Scleropages formosus seems to be cool fish, and can be raised at home, it considered as a Carnivorous. They can hunt despite their small size; also they had the ability to jump out of the water, to catch insects, frogs, birds, lizards, and any possible available food on the water surface.
Arowanas are on the top list of aquarium fishes, but they need some kind of large aquariums because of their size, and if there were other fishes with them, also it had to be covered tightly, and the water should be at 24–30 °C temperature, also you had to filter the water regularly.
Scleropages formosus can be one of most expensive animals, not only fishes on the world, to the extent that makes adding a dragon fish to your aquarium cost wealth, as it can be the Mercedes fish on water!!
Most people prefer raising dragon fishes for better luck according to Asian believes, as its colored scales, and barbels with the dragon shape a sign can bring luck, power and joy according to Chinese thoughts, also there is another strange believe which can be shocking is that the dragon fish can prevent its owners death, and die instead of him!!
These Asian arowana fishes can live more than 60 years old, but even with that long lived life, they are in danger, and can be found in the endangered animals list, and with every new day become in more danger because of fish trade!!