Peacock Cichlid (Aulonocara)

Aulonocara sp.

Cichlids - African
Reviewed by Guidarium Editorial DeskUpdated April 28, 2026

Endemic to Lake Malawi, Peacock Cichlids are highly sought after for the breathtaking colors of the males. They are benthivorous, using sensory pores on their jaws to hunt small invertebrates in the sand. While territorial, they are generally peaceful compared to their aggressive Mbuna cousins. They require hard, alkaline water and a sandy substrate to prevent gill damage while sifting.

Peacock Cichlid (Aulonocara) At a Glance

Adult Size15 cm
Body ShapeFusiform
Growth RateModerate
TemperamentSemi-Aggressive
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputHigh
StockingSolo or group

Peacock Cichlid (Aulonocara) Tank Requirements

Minimum Volume200 L
Minimum Length120 cm
FlowModerate
Water TypeFreshwater Only
Must-Haves in the Tank
Sand (Sifters)Smooth Gravel (Sensitive Barbels)
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Will Peacock Cichlid (Aulonocara) fit in your tank?

Care guides tell you what Peacock Cichlid (Aulonocara) needs, the next question is whether your tank can safely provide it. Test Peacock Cichlid (Aulonocara) against your tank size, maintenance needs, and the fish you already keep before you buy.

Peacock Cichlid (Aulonocara)
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Peacock Cichlid (Aulonocara) Water Parameters

Temperature2428°C
pH7.88.6
Hardness1025 dGH

Peacock Cichlid (Aulonocara) Temperament & Compatibility

Aggression LevelSemi-Aggressive
6/10
Where They Swim
Surface
Mid-level
Bottom
Stocking Guidelines
Keep at Least1 (solo is fine)
Max per TankNo limit
Can Live Alone?Yes
Behavior Traits
Territorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)

Peacock Cichlid (Aulonocara) Varieties

Each variety inherits the species defaults above. Only differences are highlighted.

Male (Show Color)

Fully colored males exhibiting intense blues, yellows, or reds. Often kept in carefully managed 'all-male' Hap/Peacock tanks to prevent cross-breeding and female-induced aggression. Will fight males of similar species or colorations.

Differs in 2 traits from base species

Also known as: Show Male, Colored Peacock, Standard

TemperamentAggressive
Behavior Traits
Territorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)

Female

Females are significantly less colorful, typically displaying a silvery-brown or grey base with faint vertical barring. They are smaller and less aggressive. Should be kept in a ratio of at least 3-4 females per 1 male if breeding to disperse his harassment.

Differs in 2 traits from base species

Also known as: Drab Peacock, Breeder Female, Uncolored

Adult Size12 cm
TemperamentMostly Peaceful

Unsexed Juvenile

Young Peacocks that have not yet matured or 'colored up'. At this stage, all fish look like females. They are less aggressive but will eventually need to be sexed and separated if male-on-male aggression becomes an issue as they mature.

Differs in 5 traits from base species

Also known as: Assorted Peacock, Baby Peacock, Grow-out

Adult Size5 cm
TemperamentMostly Peaceful
Min Volume110 L
Min Length90 cm
Growth RateFast

Peacock Cichlid (Aulonocara) Care Guide Summary

The Peacock Cichlid (Aulonocara), scientifically known as Aulonocara sp., belongs to the Cichlids - African family group. Adults reach a maximum size of approximately 15 cm and have a fusiform body shape with a moderate growth rate. Classified as semi-aggressive, this species primarily occupies the bottom and mid-level zones of the aquarium and produces a high level of biological waste.

To thrive, the Peacock Cichlid (Aulonocara) requires a freshwater only aquarium with a minimum volume of 200 litres and a tank length of at least 120 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 7.88.6 and a general hardness of 1025 dGH. A moderate water flow is preferred.

The Peacock Cichlid (Aulonocara) is a rewarding species to keep, provided its core environmental needs are met. This species is available in 3 varieties: Male (Show Color), Female, and Unsexed Juvenile. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.

Peacock Cichlid (Aulonocara) Habitat Setup

When setting up an aquarium for the Peacock Cichlid (Aulonocara), a moderate water flow best suits their natural preferences. Because this species occupies the bottom and mid-level zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour and smooth gravel or rounded substrate to protect their sensitive barbels. Keepers should note that expect substrate disturbance, so lightweight décor should be secured.

Peacock Cichlid (Aulonocara) Compatibility Notes

Classified as semi-aggressive, the Peacock Cichlid (Aulonocara) is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, conspecific aggression can be intense, especially in smaller tanks and territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the bottom and mid-level zones can help reduce competition and territorial overlap.

Who Peacock Cichlid (Aulonocara) Is Actually For

Peacock Cichlid (Aulonocara) is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide someone who understands its individual space requirements. It makes the most sense for a hobbyist who will actually build around its needs, especially sand.

The most common mistake is treating Peacock Cichlid (Aulonocara) like any other community fish and skipping the soft sand it needs to forage safely. Another frequent problem is forcing it into an over-busy community when it would do better with more room or more deliberate tankmate choices.

Peacock Cichlid (Aulonocara) Recommended Tank Sizes

Standard aquarium sizes that meet the minimum volume and length requirements for Peacock Cichlid (Aulonocara).

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Frequently Asked Questions About Peacock Cichlid (Aulonocara)

How big does Peacock Cichlid (Aulonocara) get?

Peacock Cichlid (Aulonocara) (Aulonocara sp.) typically reaches a maximum adult size of approximately 15 cm. They have a fusiform body shape and a moderate growth rate.

What tank size does Peacock Cichlid (Aulonocara) need?

A minimum aquarium volume of 200 litres and a tank length of at least 120 cm are recommended for Peacock Cichlid (Aulonocara). This ensures enough swimming space and helps maintain stable water conditions.

What water parameters does Peacock Cichlid (Aulonocara) need?

Peacock Cichlid (Aulonocara) thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 7.8 and 8.6, and a general hardness of 10–25 dGH. A moderate water flow is preferred.

Is Peacock Cichlid (Aulonocara) peaceful or aggressive?

Peacock Cichlid (Aulonocara) is classified as semi-aggressive with an aggression score of 6 out of 10. They can work in community setups but may clash with certain tankmates.

Can Peacock Cichlid (Aulonocara) live alone?

Yes, Peacock Cichlid (Aulonocara) can be kept singly or in a group. They are flexible and adapt well to both setups.

Does Peacock Cichlid (Aulonocara) have any special tank requirements?

Yes. Peacock Cichlid (Aulonocara) benefits from sand (sifters) and smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
April 28, 2026
Last updated
April 28, 2026
Issues or corrections?
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