Description
General Information:
The magnificent Silver Arowana (Osteoglossum bicirrhosum) is a captivating freshwater species known for its sleek, elongated body and striking silver scales. Native to the Amazon, Essequibo, and Oyapock basins in South America, this “tank buster” requires ample space to thrive. Its ability to leap out of water to catch prey has earned it the nickname “water monkey.”
Species Overview:
- Species: Osteoglossum bicirrhosum
- Common Name: Silver Arowana
- Origin: Amazon, Essequibo, and Oyapock basins, South America
- Diet: Carnivorous
- PH Range: 6.0–7.0
- Temperature: 26–29°C (79–84°F)
- Max Size: Up to 1 metre (3 feet)
- Tank Size: Minimum 250 gallons
Water Quality:
Silver Arowanas require clean, soft water with a pH between 6.0–7.0 and temperatures ranging from 26–29°C (79–84°F). A spacious aquarium with a secure lid is essential, as they are powerful jumpers. Regular water changes, strong filtration, and an open swimming area help maintain their health and vitality.
Feeding:
As carnivores, Silver Arowanas feed on live or frozen foods, such as shrimp, small fish, insects, and worms. They can also be trained to accept high-quality pellets or sticks formulated for predatory fish. Feed them once or twice daily, ensuring portions are manageable to avoid tank waste and digestive issues.
Tank Mates:
Silver Arowanas are solitary by nature and should be housed alone unless kept in a massive tank for breeding. They are predators and will eat smaller tank mates that can fit in their mouths. If tank companions are desired, consider large, non-aggressive species like giant gouramis, Oscars, or large catfish.
Sexing:
Male Silver Arowanas tend to have a slimmer body and a longer anal fin compared to females. These subtle differences become more noticeable as the fish mature.
Breeding:
Silver Arowanas are mouthbrooders, with males carrying fertilised eggs and fry in their mouths for protection. Successful breeding requires an exceptionally large tank or pond with pristine water conditions and careful monitoring. Spawning is rare in home aquariums due to their size and space requirements.
Maximum Size and Longevity:
Silver Arowanas can grow up to 1 metre (3 feet) in length and live for 10–15 years with proper care. A large tank with ample swimming space and excellent water quality is essential for their well-being.
Fun Fact:
The Silver Arowana’s powerful leap and ability to catch prey mid-air make it one of the most skilled predators in freshwater aquariums!
