The Xingu Black Neon Tetra, scientifically known as Moenkhausia heikoi, is a captivating and relatively new species of freshwater fish discovered in the clear waters of the Rio Xingu in Brazil. This species is highly valued by aquarists for its striking coloration, peaceful nature, and active behavior, making it an excellent addition to well-maintained community aquariums.

Xingu Black Neon Tetras are characterized by their sleek, elongated bodies and distinct coloration. Their bodies typically display a shimmering silver or light blue base color with a prominent black horizontal stripe running from the eye to the tail, similar to the more common Black Neon Tetra but with some unique variations. Above the black stripe, there is often an iridescent blue or green line that enhances their visual appeal. Their fins are generally clear or slightly tinted, complementing their elegant appearance.

In captivity, Xingu Black Neon Tetras thrive in aquariums that closely mimic their natural habitat. A tank setup should include a soft, sandy or fine gravel substrate and plenty of live plants, such as Java fern, Anubias, and Amazon swords, which provide cover and create a comfortable environment. Adding driftwood and rocks can also help create hiding spots and replicate their natural surroundings.

Water conditions should be slightly acidic to neutral, with moderate hardness. Maintaining stable water parameters through regular water changes and efficient filtration is crucial for the health and well-being of Xingu Black Neon Tetras. They are relatively hardy fish but do best in clean, well-oxygenated water.

Xingu Black Neon Tetras are social fish that should be kept in groups of at least six or more to promote their well-being and natural schooling behavior. Keeping them in a school not only reduces stress but also enhances their vibrant colors and active swimming patterns. They are peaceful and can be housed with other small, non-aggressive fish, making them ideal for community tanks.

Their diet should be varied to ensure they receive all necessary nutrients. Xingu Black Neon Tetras are omnivorous and will readily accept high-quality flake foods, micro pellets, and live or frozen foods such as brine shrimp, daphnia, and bloodworms. Providing a mix of these foods will help maintain their health, vibrant colors, and energetic behavior.

Breeding Xingu Black Neon Tetras in captivity can be relatively straightforward under the right conditions. They are egg scatterers, typically laying their eggs among fine-leaved plants or in spawning mops. To encourage breeding, maintain optimal water conditions with slightly acidic water and provide plenty of fine-leaved plants or spawning mops. Once spawning occurs, it is advisable to remove the adults from the breeding tank to prevent them from eating the eggs. The eggs usually hatch within a few days, and the fry can be fed with infusoria or finely crushed flake food until they are large enough to accept standard fare.

Overall, the Xingu Black Neon Tetra is an excellent choice for aquarists looking for a colorful, peaceful, and active species. Their striking appearance, gentle nature, and ease of care make them a delightful addition to any well-maintained community aquarium. With proper care, they can thrive and bring a touch of vibrant beauty and lively activity to your aquatic setup.