Albino Silver Arowana / Osteoglossum bicirrhosum
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A classic species, practically a symbol of aquarism in its own right, the Silver Arowana (Osteoglossum bicirrhosum) is a slender and strong fish. It is a species that both novice and more experienced aquarists want and will be able to keep without problems.
These particular Silver Arowana are Albino. They posses a genetic condition known as Albinism, a congenital absence of melanin (the pigment needed to color scales, fins, and eyes) caused by an autosomal recessive gene that affects pigmentation, resulting in white and yellow coloration across the fish. In our observations, these fish have mostly dark colored eyes that reflect red and show red when light hits them, but they do not have the bright red colors in the eyes that are typically characteristic of albinos.
Its appearance is well known in the aquarium hobby. The Silver Arowana is a fish from the Amazon Basin.
This Arowana exhibits an incredible silvery gray coloration on the back and is yellowish in the abdomen region. Its large mouth has an oblique slit, with two short barbels at the bottom.
Silver Arowana scales are surprising in themselves, large armored plates grouped in a mosaic form with a beautiful silver iridescence, a truly striking feature of the fish; along with its elongated and strong body shape and graceful fins. The dorsal and anal fins, unlike other fish, are situated at the back of the body. Their eyes and mouth face upwards because they swim close to the surface, among roots and vegetation, waiting for potential prey.
Their way of capturing prey is exceptional, launching themselves out of the water to capture prey. Because of this characteristic, these fish are known locally as "monkey fish." The Silver Arowana diet in the wild is quite extensive, including birds, bats, and snakes, but their primary diet consists of crustaceans, insects, small fish, and other small animals that float on the water's surface.
A peaceful species that will be limited to eating smaller fish can be kept in a community aquarium as long as there are equally peaceful and large fish.
Common name: Silver Arowana
Order: Osteoglossiformes — Family: Osteoglossidae
Distribution: South America, Amazon River basin, Rupununi and Oiapoque. Found in Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru
Behavior: Generally peaceful. Will eat fish small enough to fit in their mouth.
Compatibility: Does well in a community tank or solo. Tank mates must be big enough to not fit in the Arowanas large mouth, and must not be too aggressive either. Great tank mate options are fish such as large peaceful South American cichlids, large bottom dwellers, or any fish with similar care requirements that will not harm the Arowana. It is typically advised to only keep a single arowana in an aquarium, however if you have enough space, you can keep several in a group. If keeping multiple Arowanas, it is a good idea to keep no less than 3, preferably more, as it will help to defuse any aggression and ensure that a single fish is not targeted by aggression. This should only be done by the most experienced of aquarists.
Adult Size: 24-36"
Life Expectancy: 10+ years
pH: 6.0 to 7.0
Temperature: 75 to 86 F
Minimum size tank: 250 Gallons
Reproduction: Oviparous, buccal incubator. Male will court the female, moving in close proximity to her. If accepted, they will start swimming in circles where the female will release the eggs into the substrate and the male will then fertilize, keeping it in his mouth cavity shortly after. The males carry the eggs and juveniles in their mouths for the next few weeks.
Sexual Dimorphism: Almost imperceptible sexual dimorphism, adult females usually have a more rounded body and slightly shorter anal fin.
You should vary your diet as much as possible; and consider possibly even including insects and other types of live foods in their diet. The length and width of the aquarium are extremely important for the maintenance of the species more-so than the height, as having plenty of space for the fish to rotate is vital since its body is not as flexible as it may appear. You must also use a strong/heavy cover on the tank since this species is a very strong jumper.
It can be sometimes confused with the Black Arowana (Osteoglossum ferreirai), especially when adults, presenting silver coloration, however, Black Arowana maintains a silvery blue tone near the lower fins and a more slender body.
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