Aequidens metae – Yellow Acara

Aequidens metae – Yellow Acara

Aequidens metae was first described by Carl H. Eigenmann in 1922. This fish belongs to the family Cichlidae, which consists of many genera and species. The genus Aequidens contains about 17 species, although the exact number may vary due to taxonomic revisions.

The genus name Aequidens is derived from the Latin “aequus” (equal) and “dens” (tooth), referring to the similar teeth of the fish in this genus. The species name metae refers to the Rio Meta in Colombia, where this species was originally discovered.

Description

Appearance:
Aequidens metae has an oval, fairly high and flat body. The base color is yellowish green with two large black spots: one on the flank and one at the base of the tail. The fins are often yellow with a green or turquoise sheen. The fish can reach a length of 18 to 20 centimeters.

Differences between males and females:
Males have a slightly rounder nuchal hump and longer extensions on the dorsal and anal fins. Females are slightly rounder in the abdominal region and have less pronounced fins.

Behavior and temperament:
In general, Aequidens metae is a peaceful cichlid that can only be aggressive during the breeding season. They usually live in pairs and are not shy. They are bottom dwellers but also swim in the mid-water layers.

Life expectancy:
In the wild, they can live 8-12 years, and in a well-maintained aquarium, they can reach a similar age.

Biotope

Aequidens metae is native to South America, specifically Colombia. They live in the Meta River, which is part of the Orinoco Basin. They live in wider rivers and drainages with soft to neutral water. The environment often has a lot of underwater vegetation and the banks are usually covered with trees. The bottom consists of sand and gravel.

Climate:
They live in a tropical climate with seasonal flooding.

Diet

In the wild:
Aequidens metae is omnivorous and eats a varied diet of small invertebrates, insects, and plant material.

In the aquarium:
They can be fed a mix of live, frozen and dry foods, including spinach and peas.

The Aquarium

A 150cm aquarium is needed for a pair. For multiple pairs, a larger aquarium is needed.

Decoration:
The aquarium should be decorated with sturdy plants, rocks and driftwood to create hiding places. Use sand or fine gravel as a substrate.

Water parameters:
The ideal water parameters are a temperature of 24-28°C, a pH of 6.0-7.0, and a hardness of 3-12 dGH.

Compatibility:
They can live well with other peaceful fish such as tetras, Corydoras, and other small cichlids.

Breeding aquarium and conditioning

Breeding Aequidens metae is challenging. It is best to let a pair form from a group. The breeding tank should be large enough and have soft water. Condition the fish with live food and imitate the rainy seasons by lowering and then raising the water level.

The spawn

During spawning the colors become more intense. The eggs are laid on a hard, flat substrate and fertilized. Mating usually takes place in the morning. About 200-800 eggs are laid, which hatch after 2-3 days.

Raising the fry

The fry begin to swim freely after 2 days. Both parents care for the fry for about 3 weeks. The fry can be fed with Artemia nauplii.

Particularities

Aequidens metae is often confused with Aequidens diadema , which has no band under the eye but only a point. The species is fairly rare in the trade and can vary in color depending on the location and mood of capture.

Conclusion

Aequidens metae is a beautiful and peaceful cichlid that is suitable for advanced aquarists. They require a well-equipped aquarium with plenty of hiding places and a varied diet. Although breeding can be challenging, successfully raising the fry is very rewarding. They are not beginner’s fish, but with the right care, they can be a valuable addition to a tropical aquarium.

Video

Author

John de Lange

Copyright images

Jan Bukkems – Aquavisie