The Silver Arowana (*Osteoglossum bicirrhosum*) is one of the most iconic and sought-after freshwater fish in the aquarium hobby. Native to the Amazon Basin and other river systems in South America, this majestic predator is known for its sleek, metallic body, graceful swimming style, and impressive size. Its long body, large scales that shimmer like silver, and distinctive upturned mouth make it a true centerpiece fish.

Silver Arowanas can grow to remarkable lengths—often reaching 3 feet or more in captivity if provided with enough space. Because of their size and active swimming behavior, they require very large aquariums, with 250 gallons or more being the ideal minimum for long-term care. Many keepers even house them in indoor ponds to provide the room they need.

In the wild, Silver Arowanas are surface hunters, leaping out of the water to catch insects, birds, and other prey. In the aquarium, they should be fed a protein-rich diet that includes high-quality carnivore pellets, shrimp, fish fillets, insects, and other meaty foods. They are powerful jumpers, so a secure, tightly fitting lid is essential to prevent escapes.

These fish are generally best kept alone or with other large, non-aggressive tankmates. Small fish should be avoided, as they will quickly be eaten. Tankmates such as large cichlids, big catfish, or other similarly sized species may work if the aquarium is spacious enough.

Silver Arowanas prefer warm water, ideally between 75–82°F, with a slightly acidic to neutral pH (6.0–7.5). Strong filtration and frequent water changes are critical, as these large fish produce significant waste and need pristine water conditions to thrive.

Known for their long lifespan, Silver Arowanas can live 10–15 years or even longer in captivity with proper care. In some cultures, they are considered symbols of luck, wealth, and prosperity, further adding to their appeal.

With their metallic beauty, predatory grace, and commanding presence, the Silver Arowana is a breathtaking fish—but one best suited to dedicated aquarists who can provide the enormous space and specialized care it requires.