Black Arowana

The Black Arowana (Osteoglossum ferreirai) is a graceful South American surface predator with an elongated body, large scales, and sweeping fins. Young fish show strong dark coloration that gradually gives way to a more metallic, silvery appearance as they mature. This species makes an impressive display fish for an experienced keeper with the space and equipment to support its full adult size.

Fish details

• Common name: Black Arowana
• Scientific name: Osteoglossum ferreirai
• Size options: Approximately 13–15 cm — $150.00 each; approximately 33–36 cm — $300.00 each
• Adult size: Approximately 3 feet; allow for individual variation.
• Native habitat: South American blackwater habitats, including the Rio Negro basin.
• Water type: Freshwater
• Care level: Advanced
• Swimming level: Primarily near the surface

Aquarium setup and water conditions

• Adult housing: A very large custom aquarium or indoor pond holding several hundred gallons. A long, wide footprint and room for comfortable turning matter more than height or gallon capacity alone. Arrange permanent adult housing before buying a juvenile.
• Temperature: 78–82°F (approximately 26–28°C)
• pH: Approximately 6.0–7.0; soft water is preferred. Avoid abrupt changes in water chemistry.
• Water quality: Provide a mature biological filter, good oxygenation, and regular partial water changes. Keep ammonia and nitrite at 0 ppm.
• Layout: Provide open surface space, subdued lighting, and limited decorations positioned away from the swimming path.
• Cover: Use a strong, securely fitted lid with openings covered. This species is an accomplished jumper.

Diet and feeding

Feed a varied selection of appropriately sized insects, thawed shrimp, and suitable fish pieces. Some individuals also accept quality arowana or carnivore pellets. Smaller fish need smaller food portions. Ask about the current feeding routine before purchase and remove leftovers promptly.

Temperament and tank mates

Black Arowanas are predators and may eat fish small enough to swallow. Larger, calm companions may work in a sufficiently spacious system, but compatibility is never guaranteed. Avoid aggressive fin nippers, fish that monopolize food, and crowded surface-dwelling groups. A single arowana is the most straightforward arrangement.

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.