Saratoga Arowana
Scleropages jardinii
The Saratoga Arowana (Scleropages jardinii) is an aggressive fish that's best left to experienced keepers. Give it a tank of at least 750 litres (198 US gallons), water held at 75-86°F, and a pH of 6.5-7.5.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Australia
- Australia & Oceania
Regional colours match the stocking calculator's origin map.
Saratoga Arowana Tank Setup
Treat 750 litres (198 US gallons) as a starting point - big predators need length, strong filtration, and a secure lid. Hold the water at 75-86°F and pH 6.5-7.5, and assume anything small enough to swallow will eventually be eaten. They grow to around 60 cm, so plan the tank size and filtration for a full-grown adult rather than the small juvenile you see in the shop.
What Do Saratoga Arowanas Eat?
They're meat-eaters, so feed good-quality frozen or gel foods rather than relying on generic flake. Go easy on portions - leftover protein fouls the water faster than plant foods do.
Saratoga Arowana Tank Mates
Very aggressive surface predator; large tank required The Saratoga Arowana is aggressive, which is the first thing to weigh up when you choose tank mates. It's predatory, so anything small enough to fit in its mouth will be treated as food rather than a companion. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Saratoga Arowanas Good for Beginners?
Not a sensible first purchase. Get the tank cycled, keep easier fish stable for a year, then revisit if you still want the extra work this species demands.
Saratoga Arowana - frequently asked questions
What size tank do Saratoga Arowanas need?
Saratoga Arowanas need a tank of at least 750 litres (198 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Saratoga Arowanas need?
Keep them at 75-86°F with a pH of 6.5-7.5, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Saratoga Arowanas eat?
Saratoga Arowanas are meat-eaters. Feed good-quality frozen or gel foods rather than relying on generic flake, and don't overfeed. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Saratoga Arowanas good for beginners?
Saratoga Arowanas are not a beginner species. They need precise conditions and consistent maintenance, so build experience with hardier fish before keeping them.
Common mistakes with Saratoga Arowanas
- Underestimating tank size - the minimum footprint is 750 litres (198 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
- Adding to a new tank - Saratoga Arowanas need a fully cycled, stable aquarium; ammonia spikes in new setups are usually fatal.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Fish to avoid mixing with Saratoga Arowanas
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- OscarPredator - Oscar will eat or injure smaller tank mates
- Serpae TetraFin nipper - will shred the fins of peaceful fish
- Zebra DanioFin nipper - will shred the fins of peaceful fish
