Cyrtocara moorii (Blue Dolphin Cichlid) Care Guide

12 October 2026

Cyrtocara moorii is a large, distinctive haplochromine cichlid from Lake Malawi, recognised for its blue adult coloration and rounded forehead, which becomes more pronounced with age. It is a maternal mouthbrooder and is generally less aggressive than many Malawi mbuna, but its size and territorial breeding behaviour require a spacious aquarium. The supplied images appear consistent with blue C. moorii, although photographs cannot confirm sex, locality, or whether the fish form a true bonded pair.

Cyrtocara moorii (Blue Dolphin Cichlid) Care Guide

Taxonomy and identification

Cyrtocara moorii is a freshwater cichlid in the family Cichlidae and is commonly called the blue dolphin cichlid. It belongs to the haplochromine group of Lake Malawi fishes. Adults have a deep, laterally compressed body, fleshy lips and a sloping, often bulbous forehead. Mature fish are usually blue to blue-grey, with darker shading possible during stress, courtship or territorial displays. Head shape and colour vary with age, sex and condition.

Natural distribution

The species is endemic to Lake Malawi in East Africa. It occurs in relatively open, sediment-rich habitats where it searches the substrate for food, and it is associated with sandy or silty areas rather than the tight rock crevices typical of mbuna. Aquarium specimens may be captive-bred or collected from different localities; the supplied source does not establish the origin of these fish.

Behaviour

Cyrtocara moorii is active, observant and socially responsive. It is typically calmer than many rock-dwelling Malawi cichlids, but adult males defend breeding areas and can harass rivals or receptive females. Keeping a compatible group usually spreads social pressure more effectively than maintaining an isolated pair. Provide open swimming space together with rockwork, visual breaks and sheltered areas.

Aquarium size and setup

A pair should have at least a 400-litre aquarium, while a larger aquarium of about 500 litres or more is preferable for adult fish or a community group. A long tank with substantial floor area is more useful than a very tall tank. Use fine sand or smooth rounded substrate, robust filtration and strong oxygenation. Arrange rocks securely to create territories and retreats, leaving broad open areas for swimming. Avoid sharp décor and leave a tight-fitting lid.

Water parameters

Maintain stable, alkaline and moderately hard water, with a temperature of 24–28 °C and pH of 7.8–8.6. Aim for consistently measurable hardness appropriate for a Malawi cichlid aquarium, but stability is more important than chasing an exact value. Ammonia and nitrite must remain at zero, and nitrate should be controlled with regular partial water changes, careful feeding and effective biological filtration.

Diet

Offer a varied omnivorous diet based on high-quality cichlid pellets or flakes, supplemented with spirulina-based foods and occasional frozen or live foods such as mysis, brine shrimp or finely chopped aquatic invertebrates. Feed small portions once or twice daily rather than allowing food to accumulate. Do not rely on a heavily meaty diet, which can contribute to digestive problems and poor long-term condition.

Compatibility

Choose tankmates of similar adult size and temperament that share Lake Malawi water requirements. Suitable companions may include peaceful to moderately assertive haplochromines and other large, compatible Malawi cichlids when the aquarium is sufficiently spacious. Avoid very small fish, delicate community species, fin-nippers and highly aggressive mbuna. Monitor courtship and territorial disputes closely, especially if only one female is present. Quarantine new fish before introduction.

Breeding

This species is a maternal mouthbrooder. A male courts a receptive female over a cleaned spawning site, and the female collects the eggs and fertilises them as she picks up sperm released by the male. She incubates the eggs and fry in her mouth for several weeks, usually eating little during this period. Provide calm water, suitable flat or gently open substrate and hiding places. To raise fry, move the brooding female only with care, or allow her to release the brood in a dedicated breeding aquarium; return her to stable conditions and feed her gradually after release.

Fish info

Care level: Moderate
Temperament: Moderate
Adult size: 20–25 cm
Life expectancy: 8–12 years
Fish type: Lake Malawi haplochromine cichlid
Temperature : 24–28 °C
pH: 7.8–8.6

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