The Red Rainbowfish, scientifically known as Glossolepis incisus, is a dazzling and vibrant species of freshwater fish native to the waters of Lake Sentani in Papua Province, Indonesia. This species is highly prized in the aquarium trade for its intense coloration and active, engaging behavior, making it a standout addition to any community tank.

Red Rainbowfish are known for their brilliant red to orange-red coloration, especially in males, which intensifies during courtship or when they are in prime condition. Their bodies are elongated and laterally compressed, with large, reflective scales that add to their striking appearance. Females, while less vividly colored, still possess a beautiful silvery hue with subtle red or orange tones. Both sexes have long, flowing fins that are often edged with a contrasting color.

In captivity, Red Rainbowfish thrive in well-maintained aquariums that replicate their natural habitat. They prefer tanks with plenty of swimming space, as they are active swimmers. A tank setup should include a mix of open areas and densely planted regions, using live plants such as Java fern, Vallisneria, and Amazon swords to provide cover and a natural environment. Driftwood and rocks can also be added to create hiding spots and visual barriers.

Water quality is crucial for the health and vibrant coloration of Red Rainbowfish. They prefer slightly alkaline to neutral pH and moderately hard water. Maintaining stable water parameters through regular water changes and efficient filtration is essential to keep these fish healthy and stress-free.

Red Rainbowfish are peaceful and social, thriving best in groups of at least six or more. Keeping them in a school not only reduces stress but also enhances their natural behavior and coloration. They are excellent community fish and can coexist with other peaceful species of similar size, making them ideal for a diverse community tank.

Their diet should be varied and rich in nutrients to ensure they maintain their vivid colors and overall health. High-quality flake foods, pellets, and a variety of live or frozen foods such as brine shrimp, daphnia, and bloodworms are recommended. Including some vegetable matter, like spirulina flakes or blanched spinach, can also be beneficial.

Breeding Red Rainbowfish in captivity can be a rewarding experience. They are egg scatterers, typically spawning among fine-leaved plants or spawning mops. To encourage breeding, the water temperature should be slightly elevated, and the fish should be conditioned with high-quality foods. Once spawning occurs, it is advisable to remove the eggs or the adults to a separate tank to prevent the eggs from being eaten. The eggs usually hatch within a week, and the fry can be fed with infusoria or finely crushed flake food until they are large enough to accept standard fare.

Overall, the Red Rainbowfish is an excellent choice for both novice and experienced aquarists. Their stunning appearance, peaceful nature, and dynamic behavior make them a captivating addition to any well-maintained aquarium. With proper care and the right environment, they can thrive and become a vibrant focal point in your aquatic display.