Marlieri cichlid - Julidochromis marlieri

Scientific name: Julidochromis marlieri

Common name: Marlieri cichlid

Family: Cichlidae

Usual size in fish tanks: 12 - 15 cm (4.72 - 5.91 inch)

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Recommended pH range: 7.8 - 8.9

Recommended water hardness: 18 - 30°N (321.43 - 535.71ppm)

0°C 32°F30°C 86°F

Recommended temperature range: 24 - 27 °C (75.2 - 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: peaceful

Usual place in the tank: Bottom levels

Food and Feeding

Julidochromis marlieri is a carnivorous cichlid that naturally feeds on small invertebrates found among rocks in Lake Tanganyika. In the aquarium, they should be offered a varied diet of high-quality meaty foods. Suitable options include mysis shrimp, brine shrimp, Cyclops, daphnia, and finely chopped seafood. Larger specimens will readily accept chopped freshwater shrimp, krill, and other protein-rich foods.

High-quality cichlid granules or flakes can be used as a staple, but they should be supplemented regularly with frozen or live foods to maintain optimal health and coloration. Feeding once or twice daily in small portions is recommended. Avoid excessive feeding, as Tanganyika cichlids are sensitive to deteriorating water quality.

Origin

This species originates from Lake Tanganyika in Africa. Julidochromis marlieri inhabits rocky shorelines where it lives among crevices, caves, and rock formations. These environments provide shelter from predators and suitable spawning sites. Replicating this rocky habitat in the aquarium is essential for their well-being and natural behavior.

Tank Setup and General Care

A rocky aquarium layout is essential for keeping Julidochromis marlieri. Use stacked rocks, caves, and crevices to create territories and hiding places. These fish spend most of their time close to rock surfaces and often swim vertically along them. A sandy or fine gravel substrate is recommended to prevent injuries and allow natural digging behavior.

Water conditions should mimic Lake Tanganyika, with alkaline pH and hard water. Maintain temperatures between 24 and 27°C (75.2–80.6°F). Strong filtration and regular water changes are important, as these cichlids are sensitive to poor water quality. Moderate water movement is preferred.

Plants are not required, but hardy species such as Anubias or Java fern attached to rocks can be used. Ensure decorations are stable, as these fish may dig around caves when breeding.

Temperament and Compatibility

Julidochromis marlieri is territorial, especially toward its own species. It is best kept as a bonded pair. Keeping multiple individuals in small aquariums often leads to aggression. In larger tanks, they can be combined with other Lake Tanganyika species that occupy different territories.

Suitable tank mates include peaceful Tanganyikan cichlids such as shell dwellers, Altolamprologus species, or Cyprichromis. Avoid keeping them with very aggressive species or fish that occupy the same rocky territories, as conflicts may occur.

Sexing

Sexing Julidochromis marlieri can be difficult. Females are typically slightly larger and more robust than males. In established pairs, the size difference becomes more noticeable. During breeding, females often appear fuller in the abdomen.

Breeding

Julidochromis marlieri are cave spawners that form monogamous pairs. The best approach is to purchase a group of juveniles and allow a compatible pair to form naturally. Once a pair is established, other fish should be removed unless the aquarium is large enough.

The pair selects a cave or rock crevice where the female lays eggs. Both parents guard the eggs and defend the territory aggressively. The eggs usually hatch within a few days, and the fry remain in the cave until free-swimming.

Parents often continue to guard multiple generations of fry, making this species interesting to observe. Feed fry newly hatched brine shrimp, microworms, or finely crushed flake food.

Lifespan

With proper care, Julidochromis marlieri typically lives between 5 and 8 years. Stable water conditions, a suitable rocky environment, and a varied diet contribute to a longer lifespan.

Short Description

Julidochromis marlieri is a rock-dwelling cichlid from Lake Tanganyika known for its territorial behavior and interesting breeding habits. This species should be kept in aquariums with plenty of rocks and caves. Best maintained as a pair, it can coexist with other Tanganyikan species if sufficient space and territories are provided. Their striking pattern and fascinating parental care make them a popular choice for African cichlid enthusiasts.

Picture

Bought by aqua-fish.net from jjphoto.dk.