Yellow Peacock Cichlid

Aulonocara baenschi

Cichlids - African
Reviewed by Guidarium Editorial DeskUpdated May 11, 2026

A striking Lake Malawi cichlid known for the male's vibrant yellow coloration and metallic blue face. As a 'Peacock' cichlid, they are benthic carnivores that require fine sand to sift for invertebrates. While considered one of the more mild-mannered African cichlids, they still require hard, alkaline water and careful management of aggression, usually via an all-male display tank or a harem structure.

Yellow Peacock Cichlid At a Glance

Adult Size13 cm
Body ShapeFusiform
Growth RateModerate
TemperamentSemi-Aggressive
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputHigh
StockingSolo or group

Yellow Peacock Cichlid Tank Requirements

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

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

Yellow Peacock Cichlid
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Yellow Peacock Cichlid Water Parameters

Temperature2428°C
pH7.88.6
Hardness1025 dGH

Yellow Peacock Cichlid 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
Digger (Disturbs Substrate)Territorial (Defends specific area)Aggressive to same species/look-alikes

Yellow Peacock Cichlid Varieties

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

Male

Males display the brilliant yellow body and blue facial markings. They are territorial towards other males of the same species or similarly colored fish. Best kept as a single specimen in an all-male tank or with a harem of females.

Differs in 3 traits from base species

Also known as: Show Male, Fully Colored

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

Female / Juvenile

Females and juveniles are a drab, mottled grey-brown, which provides camouflage in the wild. They are significantly more peaceful and should be kept in a group of 3-4 if being kept with a male to disperse his breeding harassment.

Differs in 3 traits from base species

Also known as: Unsexed, Drab

Adult Size10 cm
TemperamentMostly Peaceful
Behavior Traits
Digger (Disturbs Substrate)

Yellow Peacock Cichlid Care Guide Summary

The Yellow Peacock Cichlid, scientifically known as Aulonocara baenschi, belongs to the Cichlids - African family group. Adults reach a maximum size of approximately 13 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 Yellow Peacock Cichlid 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 Yellow Peacock Cichlid is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Male and Female / 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.

Yellow Peacock Cichlid Habitat Setup

When setting up an aquarium for the Yellow Peacock Cichlid, 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. Keepers should note that expect substrate disturbance, so lightweight décor should be secured.

Yellow Peacock Cichlid Compatibility Notes

Classified as semi-aggressive, the Yellow Peacock Cichlid 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 Yellow Peacock Cichlid Is Actually For

Yellow Peacock Cichlid 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 Yellow Peacock Cichlid 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.

Yellow Peacock Cichlid Recommended Tank Sizes

Standard aquarium sizes that meet the minimum volume and length requirements for Yellow Peacock Cichlid.

Show 5 more tank sizes

Frequently Asked Questions About Yellow Peacock Cichlid

How big does Yellow Peacock Cichlid get?

Yellow Peacock Cichlid (Aulonocara baenschi) typically reaches a maximum adult size of approximately 13 cm. They have a fusiform body shape and a moderate growth rate.

What tank size does Yellow Peacock Cichlid need?

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

What water parameters does Yellow Peacock Cichlid need?

Yellow Peacock Cichlid 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 Yellow Peacock Cichlid peaceful or aggressive?

Yellow Peacock Cichlid 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 Yellow Peacock Cichlid live alone?

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

Does Yellow Peacock Cichlid have any special tank requirements?

Yes. Yellow Peacock Cichlid benefits from sand (sifters) 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
May 11, 2026
Last updated
May 11, 2026
Issues or corrections?
Contact the editorial team

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