More info
Datasheet
| Minimum Tank Size | 60 litres / 15.85 US gallons |
| Maximum Size | 3.0cm / 1.18inches |
| Temperature | 23°C / 73.40°F - 28°C / 82.40°F |
| Hardness | 1.01dgH / 18ppm - 10.03dgH / 179ppm |
| pH | 5.0-7.5 |
General Description
Trigonostigma Hengeli, commonly known as the glowlight rasbora, is a small and peaceful fish species belonging to the Cyprinidae family. It is distinguishable by its greyish body coloration with bright orange markings on the upper and anterior edges. Mature individuals measure about 3.0cm in length and are often seen schooling in densely planted aquariums.
Aquarium Setup
Choice of decor for the glowlight rasboras is not critical, but they exhibit enhanced coloration in well-furnished tanks with dark substrates. These fish thrive in dimly lit environments with soft, sandy substrates, wood roots, and branches creating shaded spots and caves. Adding dried leaf litter like beech or oak leaves simulates a natural habitat, fostering microbe colonies and providing secondary food sources for fry.
Behaviour
As a schooling species, Trigonostigma Hengeli should be maintained in groups of at least 8-10 individuals to reduce stress and promote natural behavior. Males display vibrant colors when vying for female attention. These fish are peaceful and are compatible with various tankmates, making them suitable for community aquariums with proper research and consideration of size compatibility.
Feeding and Diet
In their natural habitat, glowlight rasboras are micropredators, feeding on small insects, worms, crustaceans, and zooplankton. In aquariums, they readily accept small live and frozen foods like bloodworms, Daphnia, and Artemia, supplemented with high-quality dried flakes and granules. Regular feeding ensures optimal health and coloration.
Reproduction & Dimorphism
Glowlight rasboras exhibit unique spawning behavior by attaching eggs to the underside of broad leaves or objects. Females are typically deeper-bodied and larger, while males are slimmer with more intense coloration. Breeding requires conditioned adults in dimly lit tanks with specific water parameters and plant cover. Fry should be fed appropriately-sized live foods for growth.
Habitat and Distribution
Trigonostigma Hengeli is native to the Greater Sunda Islands, particularly found in forest streams with submerged aquatic plants like Cryptocoryne species. Their habitats feature dimly lit waters with soft, weakly acidic to neutral conditions. Collections have been reported in provinces like Jambi (Sumatra) and West Kalimantan (Borneo), with specimens collected from the Tambesi river in Sumatra.