Glowlight Rasbora Care Guide
Trigonostigma hengeli · Freshwater Fish
What Glowlight Rasbora look like
The Glowlight Rasbora (Trigonostigma hengeli) exhibits a laterally compressed, fusiform body shape, reaching a maximum adult size of approximately 1.5 inches (4 cm). Its most distinguishing feature is the striking neon orange to yellow boomerang-shaped marking that contrasts sharply against its translucent grey body, complemented by a thin black stripe that runs along the lateral line. This species lacks pronounced sexual dimorphism, though females may appear slightly fuller-bodied when gravid. Defensive adaptations include a schooling behavior that provides safety in numbers, while its small size and translucence serve as camouflage in its natural habitat. The dorsal fin is short and rounded, while the anal fin is elongated, contributing to its agile swimming capabilities.
Behavior & temperament
Glowlight Rasboras are typically found in small, cohesive schools, which is a critical aspect of their social structure, providing both safety from predators and opportunities for social interaction. They inhabit the mid to upper water column in their native streams and rivers, displaying a peaceful temperament that makes them suitable for community tanks. Breeding behavior involves egg scattering, where females release eggs among fine-leaved plants, and males engage in a courtship display to attract females. Their overall demeanor is non-aggressive, making them ideal companions for other small, peaceful fish.
Diet & feeding
In the wild, Glowlight Rasboras are omnivorous, feeding on small invertebrates, detritus, and plant matter. In captivity, they thrive on a varied diet that includes high-quality flake foods, micro-pellets, and occasional live or frozen foods such as daphnia and brine shrimp to ensure optimal health and coloration.
Behind the name
Trigonostigma (triangular mark); hengeli (named in honor of the German zoologist, Dr. Hermann Hengel).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Glowlight Rasbora?
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