Sulphurhead Peacock, Maylandii (Aulonocara maylandii) — 4-5cm

Overview

The Sulphurhead Peacock, scientifically known as Aulonocara maylandii, is a striking Lake Malawi peacock cichlid with a brilliant yellow head and peaceful-to-semi-aggressive temperament that makes it ideal for well-maintained African cichlid aquariums. Available for freshwater fish UK, this species reaches up to 8cm in length and thrives in hard, alkaline water conditions typical of East African rift lakes. Endemic to Lake Malawi, specifically West Reef and Eccles Reef, the Sulphurhead Peacock is an excellent choice for aquarists seeking a vibrant, manageable Malawi peacock cichlid with rewarding mouthbrooding breeding behaviour.

Appearance

Male Sulphurhead Peacock cichlids display stunning coloration with a brilliant yellow head that contrasts beautifully with the metallic blue body. The scales shimmer with iridescence, and the fins are elongated and edged with vivid colours. The distinctive yellow head gives the species its common name and makes it instantly recognisable among Aulonocara species. Females and juveniles are more subdued, typically displaying grey or tan coloration with minimal patterning. The pronounced sexual dimorphism is characteristic of Lake Malawi peacock cichlids and allows keepers to easily distinguish males from females once the fish mature. Under optimal conditions, the male's colours are truly spectacular.

Natural Habitat

Endemic to Lake Malawi in the country of Malawi, the Sulphurhead Peacock has only been observed on West Reef (Luwala Reef) and Eccles Reef (Chimwalani Reef). Lake Malawi is renowned for its hard, alkaline water, high mineral content, and exceptional water clarity. In the wild, males establish territories among rocks and sandy areas, displaying vivid colours to attract females. The lake's stable water chemistry and diverse microhabitats have allowed hundreds of cichlid species to evolve, each adapted to specific niches. Sadly, wild populations are threatened by collection for the aquarium trade, making responsible captive breeding essential for the species' long-term survival.

Aquarium Setup

A minimum tank size of 250 litres is recommended for a group of Sulphurhead Peacock cichlids. Use a fine sand substrate to allow natural foraging behaviour, and create a rockscape with caves, overhangs, and crevices to provide territories and hiding places. Include open swimming areas and ensure the rockwork is securely placed. Filtration must be excellent to maintain pristine water quality, with weekly water changes of 25-30% recommended. Use hard, alkaline water (pH 7.8-8.6) and consider adding Malawi-specific buffering products if your tap water is too soft. Subdued lighting and a dark substrate will reduce stress and enhance the fish's natural coloration. Avoid soft-water setups, as these fish require high pH and hardness to thrive.

Feeding

Sulphurhead Peacock cichlids are carnivorous to insectivorous micro-predators. Feed a high-quality cichlid pellet or staple formulated for Malawi peacocks, supplemented with frozen or live foods such as brine shrimp, mysis shrimp, krill, and insect larvae in moderation. Avoid fatty foods such as beef heart, which can lead to health issues. Feed twice daily in small portions that can be consumed within a few minutes, and vary the diet to ensure balanced nutrition. A balanced, protein-rich diet will enhance the male's brilliant yellow head coloration and support overall health.

Behaviour

The Sulphurhead Peacock is an active, intelligent fish that patrols its territory and interacts with tankmates. Males are territorial and will establish and defend small territories, especially during breeding. They display to attract females and engage in ritualized aggression with rival males, though serious fighting is rare if the tank is appropriately sized and structured. Females and juveniles are less territorial and often form loose groups in open areas. This species is curious and may learn to recognise its keeper, often responding eagerly at feeding time. Their lively behaviour and stunning colours make them a highlight of any Lake Malawi aquarium.

Tank Mates

Choose tankmates from other peaceful to semi-aggressive Malawi cichlids of similar size, non-aggressive Aulonocara species, Utaka and other open-water Malawi cichlids of similar temperament, and robust catfish such as Synodontis species. Avoid small fish that can be bullied or eaten, highly aggressive Mbuna in cramped tanks, fin-nipping species, very large predatory cichlids, and soft-water community fish. The key to success is maintaining a well-structured tank with adequate territories and ensuring all tankmates can handle the semi-aggressive nature of hard water tropical fish.

Breeding

Sulphurhead Peacock cichlids are maternal mouthbrooders, with females incubating eggs in their mouths for approximately three weeks. Males display and defend a spawning site, displaying intense colours to attract females. Provide a stable Malawi setup with caves or flat spawning areas and keep one male with several females. Once the fry are released, they are fully formed and can be raised on finely crushed flakes and newly hatched brine shrimp. To increase fry survival, consider separating brooding females or providing a heavily structured tank with plenty of hiding places. Breeding Malawi peacock cichlids is a rewarding experience that showcases the fascinating reproductive strategies of these fish.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading supplier of tropical fish for sale UK, offering healthy, vibrant Sulphurhead Peacock cichlids sourced from reputable breeders and quarantined for quality assurance. We provide expert guidance on malawi peacock cichlid care, water chemistry, tank setup, and compatible tankmates to help you create a thriving Lake Malawi aquarium. With secure packaging, reliable freshwater fish for sale UK delivery, and a commitment to customer satisfaction, Tropical Fish Co makes it easy to buy hard water tropical fish with confidence. Whether you're building your first Malawi tank or adding to an established collection, our knowledgeable team is here to support your success.