Furry Diary

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Chili Rasbora

Boraras brigittae

Also called Mosquito rasbora, Red rasbora, Moskitobärbling

SpeciesShort profile

From Southern and south-western Borneo (Kalimantan), Indonesia; peat swamp blackwater streams and pools123

At a glance the quick version

Length1 to 2 cm312
Lifespanup to 8 years3
Sizetiny

Typical adult size 1-2 cm (Seriously Fish max 2 cm SL); FishBase records a maximum of 3.5 cm total length

Wikipedia gives up to 8 years with good care

Strikingly red for its size
Peaceful
Ideal for small planted tanks
13

Looks how to spot one

Miniature, slender scaled cyprinid

A tiny, slim fish that stays around 2 cm. The body ranges from rusty orange to vivid red, with a dark stripe along the side that is often broken into pieces, and red spots on the tail and on parts of the dorsal and anal fins. Males are the brighter, fiery red sex, females are more orange and slightly fuller.134

Coloursbright redorange-redblack lateral stripered fin spots134

Personality what they are like

Peaceful and somewhat shy. It relaxes and colours up when kept in a group with other small, gentle fish.1

Daily activity how busy a day looks

A calm swimmer that tends to stay in the lower and middle parts of the tank; it appreciates dense planting with some open space.14

Grooming and care the hands-on bits

Keep water soft, clean and stable with regular small water changes. A dark substrate and plants help it show its best colour.14

Home where they are happiest

A minimum footprint of about 45 x 30 cm (roughly 40 litres) suits a group. Temperature 20-28 °C (German Wikipedia suggests 24-28 °C), pH 4.0-7.0, hardness 1-10 dGH. A heavily planted tank with leaf litter and gentle flow mirrors its blackwater home.142

Food basics what goes in the bowl

A micropredator eating tiny insects, worms and crustaceans in the wild. In the aquarium it accepts small flakes and granules, plus small live or frozen foods like Daphnia and Artemia.13

Company who they like around

A schooling fish best kept in groups of 8-10 or more. Suitable tankmates are other very small, calm species, shy anabantoids and dwarf shrimp.1

The story where it all began

Dieter Vogt described the species in 1978 and named it after his wife, Brigitte. It was later placed in the genus Boraras, created in 1993 to hold a small group of miniature rasboras split off from Rasbora.3215

Fun facts for the dinner table

  1. 1

    The scientific name honours Brigitte, the wife of the fish's describer Dieter Vogt.3

  2. 2

    Its German name, Moskitobärbling, refers both to its tiny size and to the collectors being badly bitten by mosquitoes while catching the fish.4

  3. 3

    Females lay up to around 50 eggs on the undersides of leaves, and the larvae hatch after about 48 hours.2

  4. 4

    It is a classic example of miniaturisation, reaching adulthood at under about 2 cm long.1

Recognised by the official bits

IUCN Red List
Assessed as Data Deficient (February 2019)2
FishBase
Described by Vogt in 19782

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Chili Rasbora. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.

  1. Seriously Fish - Boraras brigittae seriouslyfish.comused for origin, size, water parameters, care, diet, behaviour, taxonomy
  2. FishBase - Boraras brigittae fishbase.seused for author/year, IUCN status, size, breeding, water parameters
  3. Wikipedia - Chili rasbora en.wikipedia.orgused for lifespan, size, etymology, colours, habitat
  4. Wikipedia (de) - Moskitobärbling de.wikipedia.orgused for German name origin, colour details, aquarium parameters
  5. Wikipedia - Boraras en.wikipedia.orgused for genus history

Checked 2026-09-30. Text is written in our own words from these sources.