A photo of Black tetra

Black tetra Care Guide

Gymnocorymbus ternetzi

❤️ Care

The Black Tetra, a popular choice among aquarists, is a moderately easy fish to care for but requires attention to detail for optimal living conditions. Here’s a detailed guide on their care, feeding, and ideal tank setup:

Tank Setup

Black Tetras thrive in well-maintained aquariums with water conditions that mimic their natural habitat. The preferred temperature range is between 24-28°C, and the pH should be maintained from 6 to 7.5. A tank should have at least 5 liters of water per fish and a group should consist of at least six individuals given their social nature. These fish occupy all areas of the tank, being surface, mid-tank, and bottom dwellers, highlighting their active lifestyle.

A typical Black Tetra tank should be equipped with gentle filtration systems to maintain water quality, but care should be taken to avoid strong currents which they do not prefer. Although they are mostly peaceful, Black Tetras can be mildly territorial and exhibit slightly more aggression during breeding, so monitoring is advised.

Diet and Feeding

Black Tetras are not fussy eaters and will accept a variety of food types. A balanced diet can include high-quality flakes, pellets, and live or frozen options like bloodworms, brine shrimp, and tubifex worms. For optimal health, incorporate vegetable matter, algae wafers, and color-enhancing foods. Daphnia and micro worms can also be excellent dietary inclusions. Feeding should be done in moderation to prevent water contamination.

Breeding Requirements

Breeding Black Tetras can be moderately challenging but rewarding. They are egg scatterers, so setting up a dedicated breeding tank is beneficial. Keep the breeding tank temperature between 26-28°C with a pH around 7.4, and utilize soft, acidic water. Use a substrate like marbles to catch the eggs and include plenty of plants to serve as hiding spots.

Condition the breeding pair with live foods such as brine shrimp and bloodworms. Once pairing has occurred, monitor the tank for courtship behavior, which includes the male enhancing his colors and chasing the female. Post-spawning, promptly remove the parents to avoid them eating the eggs. The eggs will hatch in 24-36 hours, and the fry will initially feed on yolk sacs.

Care for Fry

Once the fry become free-swimming, usually after about five days, start feeding them with infusoria or commercial fry food. As they grow, transition them to larger foods like micro worms or pulverized flakes. Ensure the breeding tank remains clean with regular water changes and gentle filtration to safeguard the delicate fry. Gradually acclimate them to standard tank conditions as they grow before introducing them to community tanks.

Additional Considerations

Black Tetras are moderately hardy and considered affordable for hobbyists. They are categorized as least concern in terms of conservation status. Even though they are mostly peaceful, they should be kept in a species-only or carefully selected community setting to avoid stress from more territorial or aggressive species. Consistent environment maintenance and attentive care can ensure their health and vibrancy in your aquarium.

📊 Datasheet

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  • Conservation StatusLeast Concern
  • DifficultyModerate
  • HardinessModerate
  • Liters per Fish5 L
  • Maintenance LevelLow Maintenance
  • pH6.0 - 7.5
  • Minimum School Size6
  • Temperature24.0 - 28.0 °C

Please note: These values are based on the average of various confirmed sources.

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