Can Auratus Cichlid (Mbuna) and Cardinal Tetra Live Together?

🔴Not Recommended

Auratus Cichlid (Mbuna) and Cardinal Tetra are not recommended as tank mates due to conflicting pH requirements and incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Auratus Cichlid (Mbuna)

Melanochromis auratus

Cardinal Tetra

Paracheirodon axelrodi

🐠Family Group
Auratus Cichlid (Mbuna)
Cichlids - African
Cardinal Tetra
Characins
Temperament
Auratus Cichlid (Mbuna)
Highly Aggressive (9/10)
Cardinal Tetra
Peaceful (1/10)
Temperature
✓ Compatible
Auratus Cichlid (Mbuna)
23–28°C
Cardinal Tetra
24–29°C
pH Range
✗ No overlap
Auratus Cichlid (Mbuna)
7.6–8.6
Cardinal Tetra
4–7
Hardness (dGH)
✗ No overlap
Auratus Cichlid (Mbuna)
10–25
Cardinal Tetra
1–8
Water Type
✓ Compatible
Auratus Cichlid (Mbuna)
Freshwater Only
Cardinal Tetra
Freshwater Only
Flow Preference
✓ Compatible
Auratus Cichlid (Mbuna)
Moderate
Cardinal Tetra
Low
Min Tank Volume
Combined: 240 L
Auratus Cichlid (Mbuna)
200 L
Cardinal Tetra
55 L
Swimming Level
Shared: 1 zone
Auratus Cichlid (Mbuna)
MiddleBottom
Cardinal Tetra
Middle
🏷️Behavior Tags
Auratus Cichlid (Mbuna)
Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Hyperactive / Fast SwimmerDigger (Disturbs Substrate)Plant Destroyer
Cardinal Tetra
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerShy / Slow Moving (Easily Stressed)

Behaviour & Temperament

Auratus Cichlid (Mbuna) is a highly aggressive species (9/10), while Cardinal Tetra is peaceful (1/10). This notable difference means Auratus Cichlid (Mbuna) may occasionally assert dominance over Cardinal Tetra.

Large aggression gap (8 points) between Auratus Cichlid (Mbuna) and Cardinal Tetra increases stress risk for the more peaceful fish.

Auratus Cichlid (Mbuna) and Cardinal Tetra 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: Aggressive fish may bully and stress shy, slow-moving species. Hyperactive swimmers can stress shy, slow-moving species through constant motion.

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.

The pH requirements of Auratus Cichlid (Mbuna) (7.6–8.6) and Cardinal Tetra (4–7) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Auratus Cichlid (Mbuna) needs 10–25 dGH while Cardinal Tetra requires 1–8 dGH. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Auratus Cichlid (Mbuna) and Cardinal Tetra together, plan for an aquarium of at least 240 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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: Sand (Sifters), Established Algae (Otocinclus), Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), Plants - Densely covered. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Auratus Cichlid (Mbuna) is a plant destroyer, which conflicts with Cardinal Tetra's requirement for live plants. Compromise where possible or prioritise the more critical need.

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 Auratus Cichlid (Mbuna) and Cardinal Tetra live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Auratus Cichlid (Mbuna) and Cardinal Tetra need?

A minimum of 240 litres (tank length at least 120 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 Auratus Cichlid (Mbuna) and Cardinal Tetra 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 Auratus Cichlid (Mbuna) or Cardinal Tetra aggressive?

Auratus Cichlid (Mbuna) is highly aggressive (9/10) and Cardinal Tetra is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Auratus Cichlid (Mbuna) and Cardinal Tetra need?

Their pH requirements do not overlap. Auratus Cichlid (Mbuna) prefers 7.6–8.6, while Cardinal Tetra needs 4–7. This makes them incompatible in the same water chemistry.

How do I manage Auratus Cichlid (Mbuna)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Auratus Cichlid (Mbuna) 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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