Description
Blue Line Rasbora (Rasbora sarawakensis) – Sleek Elegance with a Neon Touch
The Blue Line Rasbora (Rasbora sarawakensis) is a graceful and subtly striking freshwater fish native to the slow-moving blackwater streams of Borneo. Known for its slender, torpedo-shaped body and vivid horizontal blue line that glows under aquarium lighting, this species adds elegance and tranquility to any well-planted community aquarium. Its peaceful disposition, tight schooling behavior, and shimmering appearance make it an excellent choice for aquascaped tanks and natural setups, especially when kept in groups.
Key Features:
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Latin Name: Rasbora sarawakensis
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Common Name: Blue Line Rasbora
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Coloration: Pale golden body with a vivid electric blue stripe running from head to tail
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Temperament: Peaceful, social, and shy if kept alone
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Size: Up to 1.5–2 inches
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Tank Requirements: Minimum 20 gallons, ideally with plants and subdued lighting
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Diet: Omnivorous—fine flakes, micro pellets, and small live/frozen foods like daphnia or mosquito larvae
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Compatibility: Perfect for peaceful community aquariums; keep in groups of 8 or more for natural behavior
Tips:
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Use a dark substrate and gentle lighting to bring out their iridescent blue stripe.
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Maintain high water quality and soft, slightly acidic conditions for optimal health.
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Add floating plants to provide comfort and mimic natural habitat.
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A tight school helps reduce stress and brings out their most vibrant behavior.
Why Choose This Fish?
The Blue Line Rasbora is a perfect choice for aquarists seeking a peaceful, visually refined fish to complement a planted or blackwater aquarium. Its glimmering blue stripe and serene movement offer a beautiful, calming presence—especially when displayed in synchronized schools.
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