Quick Overview of the Rummynose Rasbora
The Rummynose Rasbora (Sawbwa resplendens), also known as the Asian Rummynose or Sawbwa Barb, is a striking, specialized micro-schooling fish native exclusively to the clear, shallow, heavily vegetated margins of Inle Lake in Myanmar. Reaching a compact adult size of just 1 to 1.5 inches (2.5 to 3.8 cm), the males showcase one of the most unique color patterns in the hobby: a fully scaleless, mirror-like metallic silver body contrasted sharply by a deep crimson-to-ruby-red nose and vibrant red caps on the upper and lower lobes of the tail fin. (Females are a more subdued, uniform translucent pale-olive color, but maintaining a mixed-gender group encourages the deepest red colors in the displaying males.)
Tank/Plant Profiles & Environmental Requirements
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Care Level: Moderate (Requires slightly cooler, well-oxygenated, slightly hard water)
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Growth Rate / Activity: Active, Coordinated Midwater Nano Schooler
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Lighting: Moderate (Showcases their metallic silver reflection and ruby-red accents)
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Temperature: 20°C – 25°C (Prefers slightly cooler room temperatures)
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Tank Placement: Mid-to-Top Water Column Swimmers
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Minimum Tank Size: 15 Gallons (Must be kept in a group of 8+ minimum to build confidence and trigger male coloration displays)
Local Care Tips for Bacolod Aquarists
Bacolod Tap Water Match & Filtration Synergy: Rummynose Rasboras naturally hail from Inle Lake, a unique habitat characterized by clear, alkaline, mineral-rich water. This makes them one of the few micro fish that thrive exceptionally well in Bacolod’s naturally neutral-to-slightly-hard municipal tap water (pH 7.2–7.8) without the need for acid buffers or blackwater tannins! Keep water pristine and highly oxygenated with moderate flow, and always use a high-grade dechlorinator during your weekly water changes. Keep temperatures on the comfortable cooler end, avoiding high-heat spikes.
Nano Aquascaping & High-Contrast Layout: Their bright silver bodies look breathtaking school-gliding over dark aqua-soils or lava sand, particularly against vibrant green carpets of Monte Carlo or Dwarf Hairgrass. Replicate their natural lake habitat by providing dense clusters of stem plants and floating cover for security. Frame the background and midground with shade-loving epiphytes like Anubias Nano, Java Ferns, or Bucephalandra bound to local hardscape—just ensure the rhizomes of these epiphytes remain completely exposed above the soil to keep them from rotting!
Micro-Dietary Care & 100% Peaceful Community Etiquette: Because of their tiny mouths, Rummynose Rasboras require appropriately sized foods. Offer crushed high-grade flakes, finely powdered spirulina, micro-pellets, and regular treats of live or frozen baby brine shrimp, daphnia, or rotifers. They are completely peaceful and 100% safe to house alongside adult Neocaridina dwarf shrimp, Horned Nerite Snails, Pygmy Corydoras, and other micro-rasboras. Always maintain a secure lid or mesh screen on your tank to protect them from unexpected room light startles that could trigger leaping.
