Photo taken at Wharf Aquatics
The picture above shows two semi-adult fish (at about 18"/45cm long) that had been raised together and appeared to
be a pair - adults will not always share a tank peacefully in this way!
Photo © Sean Evans
|Common name:||Silver arowana|
|Scientific name:||Osteoglossum bicirrhosum|
|Size:||Usually 24-30" (60-90cm) in captivity, recorded up to 48" (120cm) in the wild.|
|Origin:||Amazon river basin and the still waters of Guyana.|
|Tank setup:||A very large tank (suggest 200 gallons/900 litres plus for an adult) with lots of open swimming space.
A few branches or pieces of bogwood can be used for decor.|
|Compatibility:||Highly predatory, can be aggressive.|
|Water chemistry:||Soft and acidic (pH 6.0-6.9) ideally, well filtered.|
|Feeding:||Will usually accept dead meaty foods such as cockles, mussels, prawns,
whitebait etc, or even floating pellets.|
|Sexing:||There may be differences in body depth.|
|Breeding:||Large eggs are mouthbrooded by the male for about 2 months. The
young remain in the mouth of the male until the yolk sac has been absorbed.|
The aquarium should have a tight-fitting heavy cover, as these fish may jump. They can breathe air by
utilising their swimbladder. Only the largest home aquaria are suitable for this fish.