Least Rasbora

 🐟 Least Rasbora (Boraras urophthalmoides)
Add delicate colour and peaceful movement to your aquarium with the beautiful Least Rasbora.

One of the smallest tropical fish available in the UK hobby, this nano species is perfect for planted tanks and small community aquariums.
With their subtle red-orange tones and fine black markings, Least Rasboras look stunning against green aquascapes and natural décor.

🌿 Why Choose Least Rasbora?
Ideal nano fish for small aquariums
Peaceful and community-safe
Perfect for planted and aquascaped tanks
Suitable for shrimp-safe setups
Small adult size (around 2cm)
Their tiny size makes them especially popular in nano aquariums and detailed aquascapes where larger fish would overpower the layout.

📏 Care Requirements
Scientific Name: Boraras urophthalmoides
Common Name: Least Rasbora
Tank Size: 25L+ recommended
Temperature: 22–28°C
pH: 5.5–7.5
Temperament: Very peaceful
Diet: Micro pellets, crushed flakes, frozen & live foods

For best colour and behaviour, keep in groups of 8 or more. Heavily planted aquariums with gentle flow help them feel secure and display natural schooling behaviour.

🐠 Compatibility
Ideal for peaceful nano community tanks. Suitable with small rasboras, dwarf shrimp, snails and other micro fish. Avoid larger or aggressive species.
Important Notes

Due to their small size, Least Rasboras should not be kept with fish large enough to view them as food. A mature, stable aquarium is recommended for best results.

Least Rasboras are an excellent choice for UK fishkeepers looking for a true nano tropical fish that thrives in planted aquariums and small community tanks.