Giant Danio
Devario aequipinnatus
Amatitlania nigrofasciata
Reviewed for accuracy · Last updated Jan 2, 2026, 7:24 PM
Convict Cichlids are territorial and bold fish that form strong pair bonds and display intense aggression when defending territory or fry.
Freshwater
Aggressive
Easy
32 gal (120 L)
5 in (13 cm)
8–10 years
Omnivore
Resident
Convict Cichlids are aggressive, especially during breeding periods. They are best kept with other robust and similarly sized fish. Tank mates must tolerate territorial behavior.
Large Central American cichlids or armored catfish are suitable companions. Each species should have defined territories and hiding spaces. Tank size plays a major role in reducing conflict.
Avoid small, peaceful, or slow-moving species. These fish are likely to be harassed or killed. Careful planning is essential for community setups.
Convict Cichlids adapt well to a wide range of freshwater aquarium conditions. They prefer stable parameters with moderate filtration and consistent water quality. Strong filtration is important due to their digging and waste production.
A tank with rocks, caves, and sturdy décor is essential for territory definition. They frequently rearrange substrate, so decorations should be secure. Open areas combined with hiding spots help reduce constant aggression.
Regular water changes support health and reduce stress-related behavior. They tolerate beginner mistakes but thrive with consistent maintenance. Stable environments encourage natural behavior and longevity.
Convict Cichlids are omnivorous and highly adaptable feeders. High-quality cichlid pellets or flakes should be the dietary foundation. These foods provide balanced nutrition for daily health.
Protein-rich foods such as frozen bloodworms and brine shrimp are readily accepted. These enhance growth, coloration, and breeding readiness. Feed such foods several times per week in moderation.
Vegetable matter should also be included regularly. Blanched spinach, peas, or spirulina-based foods aid digestion. A varied diet prevents nutritional deficiencies.
Convict Cichlids are among the easiest cichlids to breed in captivity. Pairs form naturally and often breed without special intervention. Flat rocks or caves are chosen as spawning sites.
The female lays eggs which are immediately fertilized by the male. Both parents aggressively guard eggs and territory. Spawning can occur frequently under good conditions.
Eggs hatch within a few days, and fry are closely protected. Parents lead fry to feeding areas and defend them fiercely. Remove fry only if aggression becomes excessive.
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