Horei Cichlid

Ctenochromis horei

Cichlids - African
Reviewed by Guidarium Editorial DeskUpdated May 4, 2026

A robust and highly aggressive haplochromine cichlid native to Lake Tanganyika. Known for its striking coloration and dynamic, albeit violent, territorial behavior. Adults are opportunistic predators and piscivores. They are maternal mouthbrooders, and males are fiercely intolerant of other males. They require hard, alkaline water.

Horei Cichlid At a Glance

Adult Size18 cm
Body ShapeFusiform
Growth RateModerate
TemperamentAggressive
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputHigh
StockingSolo or group

Horei Cichlid Tank Requirements

Minimum Volume208 L
Minimum Length120 cm
FlowModerate
Water TypeFreshwater Only
Must-Haves in the Tank
Sand (Sifters)
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Will Horei Cichlid fit in your tank?

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

Horei Cichlid
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Horei Cichlid Water Parameters

Temperature2428°C
pH7.89
Hardness1025 dGH

Horei Cichlid Temperament & Compatibility

Aggression LevelAggressive
8/10
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)Generally AggressiveAggressive to same species/look-alikesPiscivore (Eats small/nano fish)Digger (Disturbs Substrate)Fry Predator

Horei Cichlid Varieties

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

Male

Dominant males display vibrant colors and are fiercely territorial. They will not tolerate other males of their species and often fight to the death. Best kept as a single male in a harem of females.

Differs in 3 traits from base species

Also known as: Dominant Male, Show Male

Adult Size20 cm
TemperamentHighly Aggressive
StockingSolo only

Female

Slightly smaller and less colorful than males. Females are maternal mouthbrooders. Several females (3-5) should be kept per male to disperse his intense aggression and breeding demands.

Differs in 3 traits from base species

Also known as: Female, Breeder

Adult Size16 cm
TemperamentSemi-Aggressive
StockingMin 3

Juvenile (Grow-out)

Young, unsexed specimens. While they can be kept in slightly smaller tanks temporarily, they grow quickly and their aggressive, predatory instincts will develop as they mature.

Differs in 6 traits from base species

Also known as: Unsexed, Baby

Adult Size5 cm
TemperamentSemi-Aggressive
Min Volume110 L
Min Length90 cm
Growth RateFast
Behavior Traits
Territorial (Defends specific area)Digger (Disturbs Substrate)Fry Predator

Horei Cichlid Care Guide Summary

The Horei Cichlid, scientifically known as Ctenochromis horei, belongs to the Cichlids - African family group. Adults reach a maximum size of approximately 18 cm and have a fusiform body shape with a moderate growth rate. Classified as aggressive, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a high level of biological waste.

To thrive, the Horei Cichlid requires a freshwater only aquarium with a minimum volume of 208 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 7.89 and a general hardness of 1025 dGH. A moderate water flow is preferred.

Due to its specialist needs, the Horei Cichlid is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 3 varieties: Male, Female, and Juvenile (Grow-out). 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.

Horei Cichlid Habitat Setup

When setting up an aquarium for the Horei Cichlid, a moderate water flow best suits their natural preferences. Because this species occupies the mid-level and bottom 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.

Horei Cichlid Compatibility Notes

Classified as aggressive, the Horei Cichlid is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, 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 mid-level and bottom zones can help reduce competition and territorial overlap.

Who Horei Cichlid Is Actually For

Horei Cichlid is best for a fishkeeper who expects a species with attitude and plans the tank around that behavior 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 Horei 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.

Horei Cichlid Recommended Tank Sizes

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

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Horei Cichlid Feeding & Diet Considerations

The Horei Cichlid is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided and will eat fry, so breeding efforts in the same tank are unlikely to succeed.

Frequently Asked Questions About Horei Cichlid

How big does Horei Cichlid get?

Horei Cichlid (Ctenochromis horei) typically reaches a maximum adult size of approximately 18 cm. They have a fusiform body shape and a moderate growth rate.

What tank size does Horei Cichlid need?

A minimum aquarium volume of 208 litres and a tank length of at least 120 cm are recommended for Horei Cichlid. This ensures enough swimming space and helps maintain stable water conditions.

What water parameters does Horei Cichlid need?

Horei Cichlid thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 7.8 and 9, and a general hardness of 10–25 dGH. A moderate water flow is preferred.

Is Horei Cichlid peaceful or aggressive?

Horei Cichlid is classified as aggressive with an aggression score of 8 out of 10. Careful tankmate selection is essential to avoid conflict.

Can Horei Cichlid live alone?

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

Does Horei Cichlid have any special tank requirements?

Yes. Horei 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 4, 2026
Last updated
May 4, 2026
Issues or corrections?
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