
Source: Wikimedia Commons
Mesonauta festivus
A South American cichlid marked by a dark band running diagonally from the snout through the eye to the rear of the dorsal fin, on a deep, laterally compressed body. Peaceful and easy to combine with other fish, it shows well in a planted tank.
Mesonauta festivus occurs in the Paraguay drainage of the Paraná basin and in the Guaporé, Madre de Dios, Mamoré, Jamari and Tapajós drainages of the Amazon basin. A dark band runs diagonally from the snout through the eye to the rear of the dorsal fin, there is a dark blotch on the caudal peduncle, and the body is deep and laterally compressed. FishBase records a maximum of 12.1cm SL, while Seriously Fish gives 10cm. Seriously Fish recommends a 120 x 38cm tank (about 137 litres) at 24-28C, pH 6.0-8.0 with around 6.5 suggested, and hardness up to 5 dGH. It is a peaceful cichlid that can be housed with eartheaters, Apistogramma, tetras, barbs and small catfish, though it becomes more aggressive when breeding. A generalist omnivore, it accepts most prepared foods. It lays in excess of 200 eggs on a flat stone; these hatch in two to three days and the fry are free-swimming three to four days later.
Source: Wikipedia (CC BY-SA 4.0)
The Flag Cichlid lives 5-8 years.
The Flag Cichlid grows to 10-12cm.
The ideal temperature for the Flag Cichlid is 24〜28℃.
Origin
South America: Paraná basin (Paraguay drainage) and Amazon basin (Guaporé, Mamoré, Tapajós and others)
Lifespan
5-8 years
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Mesonauta festivus Heckel, 1840
Authority databases: FishBase
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed) / FishBase (IUCN assessment: LC)
Regulations may change. Always verify the latest information with the relevant authorities.
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Size
10-12cm
Temperature
24〜28℃
Prepared foods, frozen bloodworm, brine shrimp, vegetable matter
120 x 38cm (about 137 litres) or larger. Provide cover with wood and plants; floating plants over the surface help it settle.
24-28C, pH 6.0-8.0 with around 6.5 suggested, hardness up to 5 dGH.
Peaceful, and suits eartheaters, Apistogramma, tetras, barbs and small catfish. It turns more aggressive when breeding.
It accepts the majority of prepared foods. Supplement with frozen bloodworm and brine shrimp, plus some vegetable matter.
In excess of 200 eggs are laid on a flat stone. They hatch in two to three days, and fry are free-swimming three to four days later.
It may jump when startled, so always keep the tank covered.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Flag Cichlid is 24〜28℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Flag Cichlid is 5-8 years. With proper care and nutrition, they can live a long and healthy life.
Flag Cichlid typically reaches 10-12cm as an adult. Size may vary depending on care conditions and individual genetics.
Flag Cichlid feeds on: Prepared foods, frozen bloodworm, brine shrimp, vegetable matter. Aim for a balanced diet with appropriate feeding frequency.
The price of Flag Cichlid varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026