Can Asian Arowana and Pseudotropheus Acei Live Together?
Asian Arowana and Pseudotropheus Acei are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Asian Arowana and Pseudotropheus Acei?
Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.
Behaviour & Temperament
Asian Arowana is a semi-aggressive species (8/10), while Pseudotropheus Acei is generally mild-mannered (4/10). This notable difference means Asian Arowana may occasionally assert dominance over Pseudotropheus Acei.
Asian Arowana and Pseudotropheus Acei both frequent the Top (Surface) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks.
Worth noting: Asian Arowana is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 26°C and 28°C. Aim for the midpoint of this range (around 27.0°C) for optimal comfort.
The pH requirements of Asian Arowana (6–7.5) and Pseudotropheus Acei (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.
For general hardness, the shared comfort zone is 10–12 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Asian Arowana and Pseudotropheus Acei together, plan for an aquarium of at least 1000 litres with a minimum length of 240 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.
Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.
Specific environmental needs for this combination include: Smooth Gravel (Sensitive Barbels), Sand (Sifters), Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.
Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.
Why This Pairing Usually Fails in Practice
Asian Arowana and Pseudotropheus Acei are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.
Frequently Asked Questions
Can Asian Arowana and Pseudotropheus Acei live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Asian Arowana and Pseudotropheus Acei need?
A minimum of 1000 litres (tank length at least 240 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.
What water temperature is best for Asian Arowana and Pseudotropheus Acei together?
Keep the aquarium between 26°C and 28°C. A target of around 27.0°C sits comfortably within both species' preferred ranges.
Are Asian Arowana or Pseudotropheus Acei aggressive?
Asian Arowana is semi-aggressive (8/10) and Pseudotropheus Acei is generally mild-mannered (4/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Asian Arowana and Pseudotropheus Acei need?
Their pH requirements do not overlap. Asian Arowana prefers 6–7.5, while Pseudotropheus Acei needs 7.8–8.6. This makes them incompatible in the same water chemistry.
How do I manage Asian Arowana's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Asian Arowana space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
Shared setup supplies
We may earn from qualifying purchases
Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 7, 2026
- Last updated
- May 7, 2026
- Issues or corrections?
- Contact the editorial team
Related Comparisons
Asian Arowana & Australian Pearl Arowana
·
Asian Arowana & Emperor Snakehead
·
Asian Arowana & Indonesian Giant Snakehead
·
Asian Arowana & Silver Arowana
·
Asian Arowana & African Lungfish
·
Asian Arowana & Alligator Gar
·
Pseudotropheus Acei & African Butterfly Cichlid
·
Pseudotropheus Acei & Altolamprologus Calvus
·
Pseudotropheus Acei & Altolamprologus Compressiceps
·
Pseudotropheus Acei & Azureus Cichlid
·
Pseudotropheus Acei & Blue Dolphin (Hap)
·
Pseudotropheus Acei & Buccochromis lepturus
·