Can Convict Cichlid and Peacock Cichlid (Aulonocara) Live Together?

🟡Possible with Caution

Keeping Convict Cichlid and Peacock Cichlid (Aulonocara) together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 240 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Convict Cichlid

Amatitlania nigrofasciata

Peacock Cichlid (Aulonocara)

Aulonocara sp.

🐠Family Group
Convict Cichlid
Cichlids - Central American
Peacock Cichlid (Aulonocara)
Cichlids - African
Temperament
Convict Cichlid
Aggressive (8/10)
Peacock Cichlid (Aulonocara)
Semi-Aggressive (6/10)
Temperature
✓ Compatible
Convict Cichlid
22–28°C
Peacock Cichlid (Aulonocara)
24–28°C
pH Range
✓ Compatible
Convict Cichlid
6.5–8
Peacock Cichlid (Aulonocara)
7.8–8.6
Hardness (dGH)
✓ Compatible
Convict Cichlid
6–20
Peacock Cichlid (Aulonocara)
10–25
Water Type
✓ Compatible
Convict Cichlid
Freshwater Only
Peacock Cichlid (Aulonocara)
Freshwater Only
Flow Preference
✓ Compatible
Convict Cichlid
Moderate
Peacock Cichlid (Aulonocara)
Moderate
Min Tank Volume
Combined: 240 L
Convict Cichlid
75 L
Peacock Cichlid (Aulonocara)
200 L
Swimming Level
Shared: 2 zones
Convict Cichlid
MiddleBottom
Peacock Cichlid (Aulonocara)
BottomMiddle
🏷️Behavior Tags
Convict Cichlid
Digger (Disturbs Substrate)Generally AggressiveFin NipperTerritorial (Defends specific area)Plant Destroyer
Peacock Cichlid (Aulonocara)
Territorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)

Behaviour & Temperament

Convict Cichlid is a semi-aggressive species (8/10), while Peacock Cichlid (Aulonocara) is moderately assertive (6/10). This modest difference means Convict Cichlid may occasionally assert dominance over Peacock Cichlid (Aulonocara).

Convict Cichlid and Peacock Cichlid (Aulonocara) both frequent the Middle (Open Water) and Bottom (Substrate) 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 Convict Cichlid 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. Keep fin nippers in larger groups to distribute nipping behaviour among conspecifics rather than tank mates.

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 10–20 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Convict Cichlid and Peacock Cichlid (Aulonocara) 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.

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: Sand (Sifters), Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels). 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 Convict Cichlid and Peacock Cichlid (Aulonocara) live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 240 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Convict Cichlid and Peacock Cichlid (Aulonocara) 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 Convict Cichlid 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 Convict Cichlid or Peacock Cichlid (Aulonocara) aggressive?

Convict Cichlid is semi-aggressive (8/10) and Peacock Cichlid (Aulonocara) is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Convict Cichlid 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.

Will Convict Cichlid nip Peacock Cichlid (Aulonocara)'s fins?

Convict Cichlid is a known fin nipper. If Peacock Cichlid (Aulonocara) has long or flowing fins, there is a real risk of fin damage. Keeping Convict Cichlid in a larger group can help redirect nipping behaviour toward conspecifics.

How do I manage Convict Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Convict Cichlid 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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