Silver Arowana

The Silver Arowana (Osteoglossum bicirrhosum) is a striking freshwater fish with reflective silver scales, an elongated body, and long fins that create a flowing silhouette as it cruises near the surface. Native to tropical South America, this large predator is a rewarding choice for experienced aquarists who can provide permanent housing for a fish that grows to several feet in length.

Fish details

• Common name: Silver Arowana
• Scientific name: Osteoglossum bicirrhosum
• Size option: Approximately 10–13 cm — $50.00 each
• Adult size: Plan for approximately 3 feet; larger individuals are possible.
• Potential lifespan: Approximately 15–20 years with appropriate long-term care.
• Native range: Tropical South America, including the Amazon basin.
• Water type: Freshwater
• Care level: Advanced
• Swimming level: Primarily near the surface

Aquarium setup and water conditions

• Adult housing: Plan for a custom aquarium or indoor pond around 500 US gallons or larger. A long, wide footprint and unobstructed turning space are essential; a small juvenile aquarium is only temporary.
• Temperature: 78–82°F (approximately 26–28°C)
• pH: Approximately 6.0–7.5, maintained consistently.
• Filtration: Use an established biological filter, good aeration, and regular partial water changes. Maintain 0 ppm ammonia and nitrite.
• Layout: Preserve open swimming space and avoid sharp or crowded decorations.
• Cover: A heavy, securely fitted lid is essential to prevent jumping and escape.

Diet and feeding

Provide varied, suitably sized foods such as shrimp, insects, earthworms, and fish pieces, alongside appropriate floating arowana pellets when accepted. Ask about the individual fish's current diet. Avoid relying on feeder fish, which can introduce disease, and do not feed beef or chicken.

Temperament and tank mates

Silver Arowanas may coexist with larger, calm fish that are too big to swallow, provided the aquarium has sufficient space. Small community fish are potential prey. Avoid aggressive or fin-nipping companions and competition at the surface. Territorial behavior can develop between arowanas, so one per aquarium is generally the simplest setup.

Before ordering

Sizes are approximate. Select the size option shown on this listing. Contact Las Vegas Exotic Fish to confirm current availability and pickup or shipping arrangements.

All livestock and product availability is subject to change without notice. Online listings may not reflect current stock levels, and placing an order does not guarantee availability. If an item you ordered is unavailable, we will contact you to discuss available options. To confirm availability before ordering or visiting, call (702) 685-5100.

Reference photo from Las Vegas Exotic Fish. Individual fish may vary in size, coloration, and appearance.