Silver Arowana Care Guide

Osteoglossum bicirrhosum · Freshwater Fish

Silver Arowana
AI-generated illustration of Silver Arowana
Temperature
75-82°F
pH
6.0-7.5
Adult size
~35.4″ (90 cm)
Suggested tank
250+ gal
Origin
Amazon and Essequibo river basins, South America
Family
Osteoglossidae

What Silver Arowana look like

Silver Arowanas have an elongated laterally compressed body, oversized reflective scales, an upturned trapdoor-like mouth, and paired sensory barbels on the lower jaw. The long dorsal and anal fins sit far back and help the fish cruise just below the surface.

Behavior & temperament

Arowanas are powerful jumpers and need a tightly covered aquarium with a broad footprint. They are predatory, best kept with robust tank mates too large to eat, and they require excellent water quality, low stress, and room to turn without deforming the spine or fins.

Diet & feeding

Silver Arowanas are surface predators. Feed a varied diet of quality floating carnivore pellets, insects, shrimp, mussel, earthworms, and appropriately sized frozen foods. Avoid fatty mammal or bird meats and avoid live feeder fish because of disease and injury risk.

Behind the name

Osteoglossum means bony tongue; bicirrhosum refers to the two barbels on the chin.

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Silver Arowana?

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