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Live fish will be delivered only to selected pincodes in Kolkata and nearby areas.

Here is a complete care guide and detailed profile for the Least Rasbora โ€“ a tiny, peaceful, and beautiful nano fish perfect for planted aquariums and nano tanks.


๐ŸŸ Least Rasbora โ€“ Full Details & Care Guide


โœ… Common Names:

  • Least Rasbora

  • Exclamation Point Rasbora

  • Dwarf Rasbora

  • Rasbora Uropthalmoides (older reference)


๐Ÿ”ฌ Scientific Classification:

Category Detail
Scientific Name Boraras urophthalmoides
Family Cyprinidae
Order Cypriniformes
Origin Southeast Asia (Thailand, Cambodia, Malaysia)

๐ŸŽจ Appearance:

Feature Description
Body Color Transparent to light amber with a dark midline stripe and a black dot near the tail (resembles an exclamation mark)
Size 1.5 โ€“ 2 cm (0.6 โ€“ 0.8 inches)
Lifespan 3 โ€“ 5 years with good care
Sexual Dimorphism Males are slightly slimmer and more colorful; females are rounder

โš ๏ธ One of the smallest aquarium fish species in the hobby!


๐ŸŒก๏ธ Water Parameters:

Parameter Ideal Range
Temperature 22 โ€“ 28ยฐC (72 โ€“ 82ยฐF)
pH Level 5.5 โ€“ 7.0
Hardness 1 โ€“ 8 dGH
Water Type Freshwater (soft, slightly acidic preferred)

๐Ÿก Tank Setup:

Feature Recommendation
Tank Size Minimum 5 gallons (nano tank friendly)
Group Size At least 8โ€“10 (best in large groups)
Substrate Dark sand or fine gravel
Plants Dense live plants (Java moss, Rotala, floating plants)
Decorations Leaf litter, driftwood for blackwater effect
Lighting Low to moderate (brings out colors)
Filtration Sponge filter or nano HOB filter with gentle flow
Cover Yes โ€“ they are small and can jump

๐Ÿงฌ Temperament & Behavior:

Trait Description
Temperament Extremely peaceful
Schooling Yes, tightly schooling
Swimming Zone Mid to top levels
Compatibility Great for peaceful nano tanks
Activity Level Active and graceful

๐Ÿฝ๏ธ Feeding:

Food Type Examples
Staple Diet High-quality micro pellets, crushed flakes
Live/Frozen Baby brine shrimp, micro worms, daphnia
Freeze-Dried Bloodworms (chopped), tubifex (fine)
Feeding Frequency 2โ€“3 times daily in small portions

๐Ÿ› Tiny mouths need micro-sized food โ€“ avoid large flakes or pellets.


๐Ÿฃ Breeding Least Rasboras:

Breeding Type Description
Spawning Method Egg scatterers
Breeding Tank Separate with moss, fine-leaved plants
Spawning Behavior Males chase females and scatter eggs
Parental Care None โ€“ adults eat eggs
Hatching Time 24โ€“36 hours
Fry Food Infusoria, then baby brine shrimp

๐ŸŒฑ Use Indian almond leaves or soft moss for egg laying and tannin-rich water.


๐Ÿค Ideal Tank Mates:

โœ… Compatible Tank Mates โŒ Avoid These
Chili Rasboras Larger or aggressive fish
Ember Tetras Fast, boisterous fish
Dwarf Shrimp (Amano, Neocaridina) Cichlids or Gouramis
Celestial Pearl Danios Bettas (can mistake them for food)
Pygmy Corydoras Fish that may eat them due to size

๐Ÿงผ Care & Maintenance Tips:

  • ๐Ÿ’ง Weekly water changes (20โ€“30%)

  • โœ… Stable soft water conditions

  • ๐Ÿงช Use a sponge filter to avoid sucking up tiny fish

  • ๐ŸŒฟ Densely planted tanks help them feel secure

  • ๐Ÿ›‘ Avoid sudden temperature shifts


๐Ÿงพ Quick Profile Summary:

Feature Detail
Scientific Name Boraras urophthalmoides
Common Name Least Rasbora
Size 1.5 โ€“ 2 cm
Lifespan 3 โ€“ 5 years
Temperament Very peaceful
Tank Size 5+ gallons
Group Size 8โ€“10 minimum
Swimming Zone Mid โ€“ Top
Diet Micro-predator / Omnivore
Care Level Intermediate
Breeding Egg-scattering, no parental care

๐ŸŒŸ Highlights:

  • ๐Ÿงก One of the smallest aquarium fish species

  • ๐Ÿ‘ฅ Thrives in dense schools โ€“ adds life to nano tanks

  • ๐ŸŒฟ Perfect for planted and blackwater aquariums

  • ๐Ÿ  Peaceful and shrimp-safe (due to small size)



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Orders are normally Shipped within 1-2 days and usually take 2-5 working days to be delivered based on your location. However, you will receive an approximate timeline when you place your order.

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