Least Rasbora
Boraras urophthalmoides
What you need to keep a Least Rasbora
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pH
5–7
Temperature
23–27 °C
Max size
2 cm
Min tank
30 L
Where to buy
Compare prices from SA aquarium shops listing Least Rasbora.
Avg. price
R40
across 2 shops
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Overview
What to know before you buy.
The smallest of the commonly traded Boraras, with a dark lateral stripe over a gold body. Best appreciated in a heavily planted nano tank in a group of a dozen or more.
Care guide
Keeping Least Rasbora healthy in a South African setup.
Tank setup
A minimum 30L aquarium suits Least Rasbora. Provide hiding spots and stable, well-filtered water; it suits a community setup.
Water parameters
Keep pH 5–7 and 23–27°C. Stable parameters matter more than chasing perfect numbers; acclimate new arrivals slowly.
Feeding
Micropredator — tiny live and frozen foods. Feed small amounts it clears in a couple of minutes, and vary the diet.
Behaviour
Peaceful nano shoaler. Watch it at feeding time and at lights-out to see its real temperament in your tank.
Tankmates
Choose tankmates of similar size and temperament with the same water needs. Avoid fin-nippers and anything large enough to eat it.
Breeding
Breeding success with Least Rasbora depends on the line and water chemistry; ask your shop about proven pairs.
Community photos
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Market intelligence
Price trends and buyer demand — data only FishHub tracks.
Price tracking started 19 Aug 2026 — chart builds as listings are updated
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