
Aulonocara sp. 'Firefish' - Tropical Fish for Sale UK
24–28°C · pH 7.5–8.5 · 200L

Pseudotropheus sp. msobo
A striking, territorial Lake Malawi mbuna cichlid that thrives in hard, alkaline water and a rock-filled aquarium. Moderate care, aggressive. 24-28C, pH 7.6-8.6.
Maintain these water conditions for optimal health and vibrant colors
The Pseudotropheus sp. msobo is a striking, territorial Lake Malawi mbuna cichlid that thrives in hard, alkaline water and a rock-filled aquarium. Originating from the rocky shoreline habitats of Lake Malawi in East Africa, particularly around the Msobo/Msuli regions, this medium to large mbuna reaches around 15 cm in adult length and displays the characteristic aggressive territoriality and vibrant coloration of mbuna cichlids. Now available for sale UK from Tropical Fish Co, this species brings dynamic energy and stunning visual appeal to dedicated mbuna aquariums.
Adult males of Pseudotropheus sp. msobo display striking coloration that varies by locality and individual, typically including electric blue, deep purple, or orange tones with contrasting barring or blotches. Females and juveniles are generally more subdued, often displaying grey, brown, or muted coloration with less pronounced patterns. Dominant males intensify their colors dramatically during courtship displays, making them highly eye-catching. The robust, laterally compressed body and upturned mouth are characteristic of mbuna cichlids adapted for grazing algae from rocky surfaces. Juveniles are typically pale or grey-brown, developing adult coloration as they mature and establish social hierarchies.
Lake Malawi is one of the African Great Lakes, renowned for its clear, warm, highly alkaline water and exceptional cichlid diversity. Pseudotropheus sp. msobo inhabits the rocky littoral zones known as the "mbuna" habitat, where it feeds on algae and aufwuchs growing on submerged boulders. The lake's stable chemistry—hard, alkaline, well-oxygenated water with minimal seasonal variation—has driven the evolution of hundreds of specialized cichlid species. Replicating these conditions is essential for the health, vibrant coloration, and breeding success of this species in captivity.
A minimum tank size of 250 litres is recommended to house a small colony of Pseudotropheus sp. msobo alongside other mbuna species. The aquascape should feature extensive rockwork arranged to create numerous caves, crevices, and line-of-sight breaks, mimicking the natural rocky habitat of Lake Malawi. Use a sandy substrate to allow natural digging behavior. Avoid plants, as mbuna will uproot and eat most species. Strong filtration (aim for 8-10x tank volume per hour) and regular water changes (30-40% weekly) are essential to maintain pristine conditions and stable alkaline pH. Ensure the tank is well-covered, as mbuna can be capable jumpers when startled.
Pseudotropheus sp. msobo is primarily herbivorous, adapted to graze algae and aufwuchs from rocks. In captivity, provide a diet based on high-quality spirulina-based flakes or pellets, supplemented with blanched vegetables and algae-based foods. Offer occasional protein sparingly to avoid digestive issues and bloat. Overfeeding protein can lead to Malawi bloat—a potentially fatal condition in herbivorous mbuna. Feed small portions two to three times daily, and allow algae to grow naturally on rocks and glass to encourage grazing behavior. A varied, plant-based diet will promote vibrant coloration and support overall health.
This species is classified as aggressive, with males highly territorial and intolerant of rivals. Males establish territories and display intense coloration, while females carry eggs and fry in the mouth for about 3-4 weeks. In the confines of an aquarium, dominant males will chase subordinate males and harass females not ready to spawn. The typical mbuna setup involves overstocking (within safe filtration limits) to disperse aggression across many individuals. Females and subdominant males form loose hierarchies and are generally more tolerant of one another. Mbuna are territorial and can be highly aggressive, so overcrowding with appropriate tankmates is often recommended.
Top Tip: Rearrange rockwork when introducing new fish to disrupt established territories and reduce aggression. This "reset" can help new arrivals find their place in the hierarchy without excessive bullying from dominant residents. Always use gloves and caution when handling sharp rocks.
Ideal tankmates include other robust Lake Malawi mbuna of similar size and temperament, similar-sized African cichlids with comparable temperament, and species from hard, alkaline water that can tolerate aggression. Avoid housing with small peaceful fish, slow-moving fish, long-finned fish, shrimp and most invertebrates, and overly passive cichlids. The goal is to maintain a balanced mbuna community of species with similar size, temperament, and dietary needs.
Pseudotropheus sp. msobo is a maternal mouthbrooder. Breeding is triggered by stable alkaline water, warm temperatures (26-28°C), and a protein-enriched diet. Provide rockwork and multiple hiding places to reduce harassment. Males establish territories and display intense coloration. After spawning, the female collects the fertilized eggs in her mouth and retreats to a sheltered area, refusing food during the incubation period (approximately 21 days). Once released, fry are free-swimming and can be fed on finely crushed spirulina flake or newly hatched brine shrimp. Separate fry to a rearing tank if you wish to maximize survival, as tankmates will readily predate on small juveniles.
Maintain exceptional water quality with powerful filtration and frequent partial water changes. Best kept in hard, alkaline water with strong filtration and plenty of rock caves and sight breaks. Avoid overfeeding protein-heavy foods. Provide a stable, well-structured environment with plenty of hiding places to minimize stress and aggression. Quarantine new arrivals to prevent disease introduction. With proper care, Pseudotropheus sp. msobo is a hardy, long-lived species that will thrive for many years.
Tropical Fish Co is the UK's trusted source for healthy, vibrant Lake Malawi cichlids. Every Pseudotropheus sp. msobo is hand-selected for health, coloration, and vitality, and shipped with expert care. We provide comprehensive care guidance, ongoing support, and a live arrival guarantee. Our commitment to quality and customer satisfaction makes us the preferred choice for mbuna enthusiasts. Order today and experience the dynamic energy of Lake Malawi.
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