Flag Cichlid Care Guide

Mesonauta festivus · Freshwater Fish

Flag Cichlid
AI-generated illustration of Flag Cichlid
Temperature
72-82°F
pH
6.0-7.5
Adult size
~5.5″ (14 cm)
Suggested tank
20+ gal

What Flag Cichlid look like

The Flag Cichlid (Mesonauta festivus) exhibits a medium-sized, laterally compressed body that can reach a maximum adult size of approximately 5 to 6 inches. This species is characterized by its striking coloration, featuring a silver-green body adorned with a prominent, bold dark diagonal stripe that extends from the mouth, through the eye, and culminates at the dorsal fin, reminiscent of a flag. The body displays subtle iridescence, enhancing its visual appeal. Sexual dimorphism is subtle, with males typically exhibiting slightly larger dorsal fins and more vibrant coloration compared to females. Defensive adaptations include a robust body structure and the ability to retreat into crevices among aquatic vegetation. Unique morphological features include a well-developed lateral line system and a moderately sized adipose fin, which contribute to its streamlined swimming capabilities.

Behavior & temperament

Flag Cichlids are generally peaceful and can exhibit a social hierarchy, often forming loose groups in their natural habitat. They are primarily found in the mid to upper water column, displaying a semi-pelagic behavior. During breeding, they are known to be substrate spawners, laying eggs on flat surfaces, which they guard fiercely. Their temperament is relatively calm, although they can become territorial during the breeding season. In captivity, they may exhibit some social behaviors, but they thrive best in environments where they have ample space and hiding spots to retreat to when necessary.

Diet & feeding

In the wild, Flag Cichlids are omnivorous, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they require a balanced diet consisting of high-quality flakes, pellets, and occasional live or frozen foods such as brine shrimp or bloodworms to ensure optimal health and coloration.

Behind the name

Mesonauta (from Greek 'meso' meaning 'middle' and 'nauta' meaning 'sailor'); festivus (from Latin 'festivus' meaning 'festive' or 'celebratory').

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Flag Cichlid?

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