Silver Arowana - Osteoglossum bicirrhosum - Live Fish

Silver Arowana (Osteoglossum bicirrhosum)

Majestic, Powerful, and Elegant – The King of Freshwater Aquariums

The Silver Arowana is one of the most iconic and sought-after freshwater fish in the aquarium hobby. Known for its long, sleek body, metallic silver sheen, and graceful, undulating swimming style, this prehistoric predator commands attention in any large tank. Native to the slow-moving rivers and floodplains of South America, the Silver Arowana is often referred to as the "dragon fish" for its regal appearance and surface-dwelling behavior.

Capable of reaching up to 3 feet in length, the Silver Arowana requires a large aquarium (minimum 250 gallons) with secure lids, as they are powerful jumpers. They are carnivorous surface feeders with keen eyesight, often seen leaping for insects, small fish, or even birds in the wild.

Key Features:

• Scientific Name: Osteoglossum bicirrhosum

• Common Name: Silver Arowana

• Origin: Amazon Basin (South America)

• Maximum Size: Up to 36 inches

• Temperament: Semi-aggressive, predatory

• Tank Size: 250+ gallons (larger for adults)

• Diet: Carnivorous – prefers live or frozen fish, shrimp, insects; can be trained to eat pellets

• Water Parameters:

  • Temperature: 75–82°F

  • pH: 6.0–7.5

  • Water Hardness: Soft to moderate

Care Notes:

Silver Arowanas require excellent water quality, powerful filtration, and ample swimming space. They are best suited for advanced aquarists and should be housed with other large, non-aggressive fish. Because of their strength and agility, a tight-fitting lid is essential to prevent escape.

Their unique jaw structure, graceful movement, and commanding presence make them a top choice for enthusiasts looking for a true centerpiece fish.

At Rockland Aquarium, we make sure every fish is healthy, active, and eating well before being sold, so you can buy with confidence.

Photo in this listing is our stock picture. You will receive the same type, color, and grade as shown.