Slender mbuna - Pseudotropheus elongatus

Scientific name: Pseudotropheus elongatus

Common name: Slender mbuna

Family: Cichlidae

Usual size in fish tanks: 10 - 14 cm (3.94 - 5.51 inch)

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Recommended pH range for the species: 7.5 - 8.9

Recommended water hardness (dGH): 12 - 25°N (214.29 - 446.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 27 °C (71.6 - 80.6°F)

The way how these fish reproduce: Spawning

Where the species comes from: Africa

Temperament to its own species: aggressive/territorial

Temperament toward other fish species: aggressive/territorial

Usual place in the tank: Middle levels

Food and Feeding

The Slender Mbuna (Pseudotropheus elongatus) requires a well-balanced diet that primarily consists of plant-based foods. While they may consume high-protein foods, their digestive system is better suited for a diet rich in algae and vegetable matter. A high-quality spirulina-based flake or pellet should be the main food source, supplemented with blanched vegetables like spinach, zucchini, and lettuce. Occasional treats of live or frozen foods, such as brine shrimp and daphnia, can be offered but should be limited to prevent digestive issues.

Sexing

Both males and females of Pseudotropheus elongatus display a vibrant blue coloration with six to twelve dark vertical stripes. However, males exhibit more intense colors, a darker head, and distinctive dummy egg spots on their anal fins. Females tend to have a paler overall appearance.

Breeding

Like many Mbuna cichlids, the Slender Mbuna is a maternal mouthbrooder. After spawning, the female collects the fertilized eggs in her mouth and incubates them for up to three weeks. A typical brood consists of 20-40 fry. During this period, the female may eat very little as she prioritizes protecting the developing fry. Once released, the fry can be fed finely crushed spirulina flakes and baby brine shrimp for optimal growth.

Lifespan

With proper care, Pseudotropheus elongatus can live between 7 to 10 years. Providing a stable environment, high-quality nutrition, and a well-structured tank setup will help ensure a long and healthy life.

Origin and Natural Habitat

Native to Lake Malawi in East Africa, the Slender Mbuna is commonly found in rocky shorelines and shallow waters. They thrive in environments with strong water currents, plenty of hiding spaces, and abundant algae growth, which serves as a natural food source.

Tank Requirements and Behavior

The Slender Mbuna is highly territorial and aggressive, especially toward its own species. To minimize aggression, they should be housed in a large tank of at least 150 liters (40 gallons) with ample rock formations and caves to establish territories. It is best to keep them in a ratio of one male to several females to reduce male aggression. Strong filtration and regular water changes are necessary to maintain the high water quality they require.

Suitable Tankmates

Due to their aggressive nature, Pseudotropheus elongatus should only be housed with other robust and similarly tempered Mbuna species. Suitable tankmates include:

• Yellow Lab Cichlid (Labidochromis caeruleus)
• Zebra Cichlid (Maylandia zebra)
• Auratus Cichlid (Melanochromis auratus)
• Demasoni Cichlid (Pseudotropheus demasoni)

Suitable Plants

While Mbuna cichlids are not known for being plant-friendly, some hardy plants can be included to provide cover and improve water quality. Recommended plant species include:

• Anubias (Anubias spp.)
• Java Fern (Microsorum pteropus)
• Vallisneria (Vallisneria spp.)

Short Description

The Slender Mbuna (Pseudotropheus elongatus) is a visually striking and highly aggressive cichlid from Lake Malawi. Its long, streamlined body distinguishes it from other Mbuna species. Due to their territorial nature, they require carefully structured tanks with plenty of hiding spots. Their diet should consist primarily of plant-based foods to prevent digestive issues. While they can be a challenging species to keep, they are a rewarding addition to an experienced aquarist’s African cichlid setup.

Sources

Aquarium Fishes of the World by Dr. Herbert R. Axelrod, Dr. Warren E. Burgess, Neal Pronek, Glen S. Axelrod, David E. Boruchowitz

Picture

Thanks to Marwin!