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Sawbwa barb

Sawbwa resplendens

Fishes › Carp, barbs, minnows, loaches (Cypriniformes) › Cyprinidae (Carps and barbs)

The sawbwa barb (Sawbwa resplendens), also known as the Burmese rammy nose, Asian rummynose or rummynose rasbora, is an endangered species of cyprinid fish in the monotypic genus Sawbwa.

Aquarium hobby
Experience: Intermediate
Sawbwa barb
Photo: The Man On The Street at English Wikipedia, CC BY 3.0, via Wikimedia Commons
FamilyCarps and barbs
Adult lengthup to 1.4 in
WaterFreshwater
HabitatLives in freshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 24 in long and 12 in front to back for one adult (adults commonly reach about 1.2 in / 3 cm).
  • Water: Freshwater.
  • Temperature: 70–77°F (range recorded for this species).
  • pH: 7–8.
  • Hardness: 9–19 dGH.
  • Layout: Uses both the bottom and open water: give open swimming space plus cover near the substrate.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

  • Tank: a base of at least 24 × 12 in (roughly 14 US gallons); space needed is rated “modest tank”.
  • Water: a fairly wide range, from slightly acidic to slightly alkaline, 64–72 °F, pH 6–8, 3–15 dGH.
  • Behaviour: temperament peaceful; a shoaling fish best kept in a group of six or more; suited to a community tank.
  • Difficulty: Easy (Seriously Fish rating).

Short excerpts from the species profile:

  • Setup: “Perhaps most suited to a heavily-planted set-up, preferably with a dark substrate.”
  • Diet: “Likely to feed chiefly on small invertebrates and other zooplankton in nature.”
  • Tankmates: “Peaceful towards other species but not an ideal choice for the general community aquarium due to its small size and aggressive interactions between rival males.”
  • Breeding: “Naturally deposits eggs among aquatic vegetation, filamentous algae, or on the underside of broad leaves, but in the aquarium synthetic spawning mops can also be used if you prefer.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

Carps and barbs

Applies to most species in this group. Habitat: The listed barbs and freshwater sharks occupy Asian streams, rivers and floodplain waters, with bala sharks also using natural lakes. Individual species can differ, so compare with the species numbers above and the linked sources.

Level 3 is an editorial rating reflecting large and territorial species. Temperature applies to tiger barbs and red-tailed black sharks; bala sharks are sourced at 68–82.4°F. Bala sharks reach about 35 cm and need very large quarters. Epalzeorhynchos are not managed like shoaling barbs. Tinfoil and Denison barbs, gold barbs and rainbow sharks require species-specific adult-size and water assessments; the tiger-barb minimum is not a family minimum.

Housing & setup

  • Tiger barbs need a base at least 80 × 30 cm (about 31 × 12 inches), with vegetation and driftwood cover.
  • Adult bala shark groups need a base at least 240 × 60 cm (about 96 × 24 inches), ample open swimming space and a heavy, tight lid.
  • Red-tailed black sharks need a base at least 120 × 45 cm (about 48 × 18 inches), with rocky refuges.
  • Use efficient filtration, water movement and high oxygenation for riverine bala and red-tailed sharks.

Sources 922923924925

Climate & lighting

Water68–78.8°F

Sources 922923924925

Diet

  • Quality flakes or granules containing plant material.
  • Live or frozen Daphnia, Artemia and bloodworms.
  • For larger bala sharks: chopped earthworms, prawns or mussels.
  • For bala sharks: shelled peas, blanched courgette or spinach.

Sources 922923924925

Social life

  • Keep tiger barbs in at least 8–10 and bala sharks in at least five. Avoid timid or long-finned companions for tiger barbs. Red-tailed black sharks become territorial toward similar-looking fishes.

Sources 922923924925

Health watch

  • Ammonia toxicity.
  • Nutritional deficiencies.

Sources 922923924925

Understanding the animal

About this animal

About this animal

The species is endemic to Inle Lake in Myanmar (Burma). It grows to a maximum total length of 3.5 cm (1.4 in).

Quoted from the Wikipedia article “Sawbwa barb” (CC BY-SA 4.0) 174

In the wild

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.1

Where it livesLives in freshwater, in lakes. Uses both the bottom and open water. Extremely common all over the Inle lake and in the swamps that surround the lake. Occurs in large shoals among dense vegetation both in clear and in peaty and often foul waters.
Water it lives inFreshwater, 70–77 °F (21–25 °C), pH 7–8, hardness 9–19 dH.
ClimateTropical climate.
Behavior to plan forBreeding: open water/substratum egg scatterers.

What this means for care

  • Keep water within its wild range, 70–77 °F.
  1. FishBase species summary: Sawbwa resplendens
From the sources

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

OverviewThe sawbwa barb (Sawbwa resplendens), also known as the Burmese rammy nose, Asian rummynose or rummynose rasbora, is an endangered species of cyprinid fish in the monotypic genus Sawbwa. The species is endemic to Inle Lake in Myanmar (Burma). It grows to a maximum total length of 3.5 cm. Mature males are iridescent silvery-blue with red snout and red lobes to the tail fin; females are duller without red and with a dark pigmentation spot by the anus. — Wikipedia (community-edited)
Where it livesHome ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
ReproductionSeveral pairs spawn simultaneously among vegetation. Eggs are deposited on the bottom side of large leaves. — FishBase
BiologyExtremely common all over the Inle lake and in the swamps that surround the lake. Occurs in large shoals among dense vegetation both in clear and in peaty and often foul waters. — FishBase

Data and studies

The numbers

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources1.3in
FishBase 1641.2
Seriously Fish species profiles 1671.4

Maximum recorded length. Fish in home aquariums often stay smaller than wild records.

Water temperature

Average of sources67–74.5°F
FishBase 16470–77
Seriously Fish species profiles 16764–72

Range the species tolerates in nature; aim for the middle.

pH

Average of sources6.5–8
FishBase 1647–8
Seriously Fish species profiles 1676–8

Water hardness

Average of sources6–17dGH
FishBase 1649–19
Seriously Fish species profiles 1673–15

Minimum tank footprint

Reported24in
Seriously Fish species profiles 16724

Seriously Fish recommends a tank base of at least 24 × 12 in (about 14 US gallons).

Sources for this sheet

  1. FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
  2. Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
  3. Seriously Fish — Puntigrus tetrazona Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  4. Seriously Fish — Balantiocheilos melanopterus Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  5. Seriously Fish — Epalzeorhynchos bicolor Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  6. Merck Veterinary Manual — Disorders and Diseases of Fish Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
  7. Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.
  8. iNaturalist (captive observations) Community referenceCommunity observation platform run by the California Academy of Sciences and National Geographic; observations marked captive show animals living in homes, zoos and aquariums.