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Silver arowana - Osteoglossum bicirrhosum

Silver arowana - Osteoglossum bicirrhosum

Scientific name: Osteoglossum bicirrhosum

Common name: Silver arowana

Family: Osteoglossidae

Usual size in fish tanks: 90 - 100 cm (35.43 - 39.37 inch)

014

Recommended pH range for the species: 6 - 6.6

Recommended water hardness (dGH): 4 - 12°N (71.43 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 24 - 30 °C (75.2 - 86°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: aggressive/territorial

Temperament toward other fish species: peaceful

Usual place in the tank: Middle levels

General information

Silver Arowana are classed as prehistoric fish, they have evolved only slightly compared to other species of fish on this planet. They also have a nasty bite as their tongue is also covered in small teeth so treat the Silver Arowana with respect and keep your fingers at a safe distance from the fishes mouth. As adults they can grow up to 4 feet in length so will require a very large aquarium. They are active swimmers so the aquarium needs to be at least three times their body length to give them space so an adult specimen will require an aquarium that is 12 feet in length, always remember this if you decide on purchasing a small juvenile that may be only a few inches in length. They are also excellent jumpers so the aquarium will need a tight fitting lid to prevent them from leaping out of the tank.

As expected with larger species of fish they are high waste producers and with the size of the aquarium required a large filtration system will be needed, keeping these fish for a long time is not cheap so make sure your allowed budget will let you cover all the needs that the Silver Arowana demands.

Feeding

Feed them live fish such as Guppies. You can also use beef heart. They do prefer live foods but this can restrict the choices available for your fish, with patience they should accept other meaty foods over a period of time.

Sexing

Possible when adults create pairs. These have been known to breed in aquariums when the conditions are right, the problems will start if you decide to raise the fry/juveniles as a lot of tanks will be required to grow them on.

Breeding

Mouthbrooders, the parent fish will incubate the eggs and hold the fry in their mouths until they reach a size and independence where the parents can release them into a safe environment.

Lifespan

Depending on the tank, it might vary from 4 up to 10 or even 15 years.

Pictures

Thanks to Kevin who has allowed us to use his pictures.

Silver arowana Silver arowana Silver arowana Silver arowana Silver arowana Silver arowana Silver arowana Silver arowana

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