The Arowana Fins Care Journal
Plain-language guidance for planning a large freshwater aquarium, evaluating a specimen, and caring for an Arowana responsibly over the long term.
Aquarium planning
Arowanas are powerful surface swimmers and accomplished jumpers. Start with generous horizontal swimming length, a fully cycled system, and a strong, gap-free lid. Plan around adult size rather than the juvenile size shown in a listing.
Read the complete care guide →Water quality
Mature biological filtration, strong oxygenation, regular testing, and consistent maintenance matter more than constant chemical adjustment. Record temperature, pH, ammonia, nitrite, and nitrate so changes are noticed early.
Prepare your aquarium →Nutrition
A varied, appropriately sized diet helps avoid nutritional gaps. Portion carefully, remove uneaten food, and watch appetite over time. Sudden refusal to eat can indicate stress, unstable water, or illness and deserves investigation.
Ask about a listed fish's current diet →Choosing a fish
Species differ in adult size, temperament, appearance, availability, and legal status. Choose based on the aquarium you can maintain for years—not color alone—and verify ownership rules at the destination before reserving.
Compare available specimens →