AquaStocker

Chili Rasbora Care Guide

Boraras brigittae · Moderate care · 5 gallon minimum

Updated June 2026
By the AquaStocker team · How we source our data
Chili Rasbora (Boraras brigittae)
Photo via Wikimedia Commons 📌 Save

A tiny, fiery-red nano fish perfect for planted desktop tanks; best in soft water and big shoals.

Adult size0.7"
Min tank5 gal
Temp76–82°F
pH4.5–7
TemperamentPeaceful
SocialGroups of 8+
Care levelModerate
DietOmnivore

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How big does a chili rasbora get?

A chili rasbora (Boraras brigittae) reaches about 0.7 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.

Tank size & setup

Give a chili rasbora a minimum of 5 gallons, with water at 76–82°F and a pH of 4.5–7. Keep them in groups of at least 8 — they are shoaling fish and become stressed and washed-out alone. As a moderate-care, omnivore species, a stable, cycled tank with the right diet keeps them healthiest.

Good tank mates

Pair a chili rasbora with peaceful species that share its temperature and pH range. Compatible options include:

About the chili rasbora

Boraras brigittae, also known as the chili rasbora or mosquito rasbora, is a very small species of ray-finned fish in the family Danionidae. It is endemic to the swamps of South West Borneo, Indonesia. It is a popular aquarium fish due to its small size and colorful appearance.

Recommended gear for chili rasboras

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FAQ

What size tank does a chili rasbora need?
At least 5 gallons. Because they shoal, budget for a group of 8+ rather than a single fish. Bigger is always more forgiving for water quality.
Is the chili rasbora good for beginners?
It's a moderate-care species, so dial in a stable, cycled tank and correct water parameters first.

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