Can Giant Gourami and Peacock Cichlid (Aulonocara) Live Together?
Keeping Giant Gourami and Peacock Cichlid (Aulonocara) together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 1200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Behaviour & Temperament
Both Giant Gourami and Peacock Cichlid (Aulonocara) are moderately assertive species with an aggression score of 6/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.
Giant Gourami and Peacock Cichlid (Aulonocara) both frequent the Middle (Open Water) 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.
To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Giant Gourami and Peacock Cichlid (Aulonocara) to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations.
Water Parameters
The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.
Both fish can tolerate a pH between 7.8 and 8. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 10–25 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Giant Gourami and Peacock Cichlid (Aulonocara) together, plan for an aquarium of at least 1200 litres with a minimum length of 200 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.
Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.
Specific environmental needs for this combination include: Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), Sand (Sifters). 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.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Giant Gourami and Peacock Cichlid (Aulonocara) live together?▾
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 1200 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Giant Gourami and Peacock Cichlid (Aulonocara) need?▾
A minimum of 1200 litres (tank length at least 200 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 Giant Gourami and Peacock Cichlid (Aulonocara) together?▾
Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.
Are Giant Gourami or Peacock Cichlid (Aulonocara) aggressive?▾
Giant Gourami is moderately assertive (6/10) and Peacock Cichlid (Aulonocara) is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Giant Gourami and Peacock Cichlid (Aulonocara) need?▾
Both species overlap in the 7.8–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Giant Gourami's territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Giant Gourami 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.
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