Hengeli Rasbora

Introduction: The Hengeli Rasbora is a small and peaceful freshwater fish admired for its subtle beauty and easygoing nature. Scientifically named Trigonostigma hengeli, this species is a popular choice for community aquariums due to its vibrant orange stripe and schooling behavior. Native to the slow-moving waters of Southeast Asia, the Hengeli Rasbora brings a touch of elegance to any well-planted tank.

Scientific Name: The Hengeli Rasbora is scientifically known as Trigonostigma hengeli. It is sometimes referred to as the Glowlight Rasbora due to the distinctive orange stripe that runs along its body.

Water Quality and Temperature: To maintain a healthy environment for the Hengeli Rasbora, it’s important to replicate the soft, acidic water of its natural habitat:

• Temperature: Keep the water temperature between 73°F and 80°F (23°C to 27°C).
• pH Level: Maintain a pH level between 5.5 and 7.0.
• GH Level: Aim for a general hardness (GH) level between 1 to 8 dGH.
• KH Level: Keep the carbonate hardness (KH) within the range of 1 to 5 dKH.

Feeding: The Hengeli Rasbora is an omnivorous species that enjoys a varied diet. To keep them healthy and vibrant, provide:

• Flake Foods: High-quality flake foods suitable for small tropical fish.
• Micropellets: Nutrient-rich micropellets formulated for small fish.
• Live or Frozen Foods: Such as brine shrimp, daphnia, and micro worms for added protein and variety.

Tank Mates: Hengeli Rasboras are peaceful and social fish, making them excellent additions to community tanks. They thrive in groups and should be kept with other small, non-aggressive species like tetras, small barbs, and dwarf gouramis. They also pair well with bottom-dwellers such as Corydoras catfish. It’s best to avoid housing them with larger, more aggressive species that may prey on them or cause stress.

Substrates and Tank Decorations: A soft, sandy substrate is ideal for the Hengeli Rasbora, mimicking the riverbeds of their natural habitat. Provide plenty of live plants, driftwood, and rocks to create hiding spots and a comfortable environment. The addition of floating plants can help diffuse light, replicating the shaded waters they are accustomed to. Ensure there is ample open space for swimming, as these fish are active and enjoy schooling in the middle levels of the tank.

Suitable Plants: The Hengeli Rasbora appreciates a well-planted tank with plenty of cover. Hardy plants such as Java Fern, Anubias, and Cryptocoryne are ideal choices, as they provide shelter and mimic the natural environment. Floating plants like Salvinia or Duckweed can help create a more natural lighting condition, making the fish feel more secure.

Sexing: Sexing Hengeli Rasboras can be challenging, as males and females are quite similar in appearance. However, males tend to be slightly slimmer and more vibrantly colored, especially during the breeding season. Females may appear rounder, particularly when carrying eggs.

Breeding: Breeding Hengeli Rasboras in captivity is relatively straightforward with the right conditions. To encourage spawning, set up a separate breeding tank with slightly warmer water and fine-leaved plants for the females to lay their eggs. The pair will typically spawn early in the morning, and the female will scatter her eggs among the plants. After spawning, remove the parents to prevent them from eating the eggs. The eggs will hatch in about 24 to 36 hours, and the fry can be fed on infusoria or commercially available fry foods.

Maximum Size and Longevity: The Hengeli Rasbora grows to an average length of about 1.5 inches (4 cm). With proper care, they can live up to 3 to 5 years in a well-maintained aquarium.

General Information: The Hengeli Rasbora is a delightful fish that adds movement and color to any aquarium. Its peaceful nature, combined with its striking appearance, makes it a great choice for both novice and experienced aquarists. They are active swimmers and enjoy being kept in groups, which helps them feel more secure and display their best colors.

A Fun Fact: The Hengeli Rasbora’s glowing orange stripe is not just for show—it’s a natural adaptation that helps them stay together in schools in the dimly lit waters of their native habitats. This distinctive stripe reflects light, allowing them to recognize and follow each other, even in low-light conditions.