Gulf saratoga
Scleropages jardinii
Also known as Northern saratoga, Australian bonytongue, Pearl arowana, Jardini arowana
Care at a glance
- Temperature
- 75–86°F (24–30°C)
- pH
- 6.5–7.5
- Adult size
- 35.4 in (90 cm)
- Minimum tank
- 317 gal (1,200 L)
- Temperament
- Aggressive
- Social behavior
- Solitary
- Swim level
- Top
- Difficulty
- Difficult
- Breeding
- Hard
- Rarity
- Rare
- Origin
- Native to northern Australia and southern New Guinea, found in rivers, billabongs and still lagoons.
- Family
- Osteoglossidae
Overview
Expect an adult near 90 cm and provide at least 1200 litres with a wide surface and a heavy, tight lid, since saratogas jump hard. Keep them at 24 to 30 C and pH 6.5 to 7.5 with strong filtration. They are best kept singly or with large, robust tankmates, as they are aggressive and will eat smaller fish. Feed prawns, insects, earthworms and pellets.
In the wild
The Gulf saratoga is an Australian bony-tongue with large pearly scales, each marked with a pink or red crescent that catches the light. It is a surface-oriented ambush predator of still and slow waters. Adults are territorial and often aggressive toward their own kind.
Good to know
Scleropages jardinii is a mouthbrooder, with the male carrying the eggs and fry. It is one of two Australian Scleropages, separated from the southern saratoga by range and spot pattern. The species is an air-gulper adapted to warm, oxygen-poor billabongs.
Did you know
Saratogas are sometimes called living fossils because their bony-tongue lineage has changed little for tens of millions of years.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Keeping Gulf saratoga?
Track water tests, reminders and stocking fit.
Related species

Asian arowana
Scleropages formosus35.4 in (90 cm)264 gal (1,000 L)75–86°F (24–30°C)
Black arowana
Osteoglossum ferreirai35.4 in (90 cm)396 gal (1,500 L)79–86°F (26–30°C)
Silver arowana
Osteoglossum bicirrhosum39.4 in (100 cm)396 gal (1,500 L)75–82°F (24–28°C)
Adonis Pleco (L155)
Acanthicus adonis35.4 in (90 cm)264 gal (1,000 L)77–84°F (25–29°C)
Tiger shovelnose catfish
Pseudoplatystoma fasciatum35.4 in (90 cm)300 gal (1,135 L)75–82°F (24–28°C)
Speckled peacock bass
Cichla temensis39 in (99 cm)396 gal (1,500 L)79–84°F (26–29°C)
