The Uaru cichlid - Uaru amphiacanthoides

Scientific name: Uaru amphiacanthoides

Common name: The Uaru cichlid

Family: Cichlidae

Usual size in fish tanks: 16 - 20 cm (6.3 - 7.87 inch)

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Recommended pH range for the species: 5 - 7

Recommended water hardness (dGH): 5 - 12°N (89.29 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 26 - 28 °C (78.8 - 82.4°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Middle levels

Uaru Cichlid Overview

The Uaru Cichlid (Uaru amphiacanthoides) is a large, intelligent cichlid species native to the Amazon River basins of South America. These fish are known for their peaceful nature, particularly among their own species, and their distinctive change in coloration as they mature. Juveniles exhibit a mottled appearance, while adults darken to a rich brown or olive hue. In captivity, Uaru Cichlids can grow to a size of 16 to 20 cm (6.3 to 7.87 inches), making them ideal for large aquariums where they can thrive in a calm and well-maintained environment. Uaru Cichlids are plant-eaters, so aquarists need to be mindful when aquascaping their tank.

Tank Requirements

Due to their large size and active nature, Uaru Cichlids require a spacious aquarium of at least 300 liters (79 gallons). It is important to create an environment that mimics their natural habitat, which consists of calm waters with plenty of submerged vegetation. The tank should include driftwood, large rocks, and areas of open swimming space. However, it is advisable to avoid delicate plants, as Uaru Cichlids are known to nibble on and consume plant matter.

Maintain water temperatures between 26-28°C (78.8-82.4°F) with a soft, slightly acidic pH range of 5 to 7. Water hardness should be kept between 5 to 12°N (89.29 - 214.29 ppm). These cichlids are sensitive to changes in water quality, so regular water changes (20-30% weekly) and a strong filtration system are necessary to keep the water clean and stable. Additionally, maintaining stable water parameters is critical to their long-term health.

Food and Feeding

Uaru Cichlids are omnivorous with a strong preference for plant-based foods. In the wild, they graze on algae, aquatic plants, and other vegetation. In captivity, their diet should be primarily plant-based, with a high-quality cichlid flake or pellet as the staple. Supplement their diet with fresh vegetables such as lettuce, spinach, or peas. Additionally, offer protein-rich treats such as brine shrimp, bloodworms, and tubifex 2-3 times per week to ensure balanced nutrition. Feeding small portions multiple times daily helps prevent overeating and keeps the water clean.

Sexing

Sexing Uaru Cichlids is very difficult due to the lack of visible sexual dimorphism. Males and females look nearly identical, with little to no difference in size or coloration. The best way to obtain a breeding pair is to purchase a group of six or more juveniles and allow them to form natural pairs as they mature.

Breeding

Breeding Uaru Cichlids in captivity can be challenging, but it is possible with the right conditions. These fish are substrate spawners, meaning the female will lay her eggs on a flat surface, such as a rock or the aquarium substrate. Depending on the size and health of the female, she can lay anywhere from 100 to 1000 eggs. After spawning, the female will fan the eggs to keep them oxygenated, and they will hatch within 2-3 days. The fry will initially feed on the mucus secreted from the skin of their parents, a behavior common in some cichlid species. Once the fry grow larger, they can be fed newly hatched brine shrimp or finely crushed flakes.

Lifespan

With proper care, Uaru Cichlids can live for 8-12 years. Maintaining stable water conditions, providing a balanced diet, and ensuring a peaceful tank environment are key to maximizing their lifespan.

Compatibility and Tank Mates

Uaru Cichlids are generally peaceful and can coexist with other non-aggressive fish. They are best kept with similarly sized, peaceful species such as Angelfish, Severums, and Flag cichlid. Avoid housing them with small, delicate species or overly aggressive fish, as this can cause stress and territorial disputes. When keeping Uaru Cichlids, ensure the tank has enough space for all inhabitants and provides plenty of hiding spots to reduce stress. A species-only tank can also work well, especially when breeding is the goal.

Short Description

The Uaru Cichlid (Uaru amphiacanthoides) is a large, intelligent species from the Amazon River basins. Known for their calm temperament and unique coloration changes, they make an excellent addition to large community tanks with similarly sized fish. Uaru Cichlids are omnivores with a strong preference for plant-based foods, and they thrive in well-maintained aquariums with stable water conditions. Their fascinating breeding behavior, which involves the fry feeding off the mucus of the parents, makes them a unique species for experienced aquarists.

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