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Sixbelt Barb

Desmopuntius hexazona

A peaceful and striking schooling barb with six black vertical bands, preferring soft, acidic water and densely planted tanks.

Family
Cyprinidae
Origin
Asia: penisola malese, Sumatra e Borneo.
Origin
Extra-Amazon South AmericaSouth and Southeast Asia
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

24 °C - 28 °C

pH Value

6 - 7.5

Water type

Freshwater

Tank level

Metà

Adult size

5.5 cm

Species description

Geographical Origin and Habitat: Native to Southeast Asia, across the Malay Peninsula, Sumatra, and Borneo. Inhabits peat swamp forests with slow-flowing, tannic, acidic blackwaters.

Taxonomy and Morphology: A member of the Cyprinidae family. Often confused with the Tiger Barb but distinguished by its six vertical black bands. Grows to 5.5 cm.

Social Behavior: Peaceful and shoaling. Keeps to the middle water layers. Keep in a group of 6-8 or more to ensure they feel secure and display natural behaviors.

Coloration and Sexual Dimorphism: Reddish-gold body highlighted by six vertical black bars and red hues on the fins. Males are smaller and more intensely colored when mature.

Care, breeding and tankmates

Aquarium Setup: An 80-liter tank with dark substrate, peat filtration, and dense plants. Subdued lighting is recommended to mimic their peat swamp forest habitat.

Diet and Feeding: Omnivorous. Readily accepts flakes and micro-pellets. Feed frozen or live foods like bloodworms, daphnia, and brine shrimp to promote health.

Water Quality: Prefers soft, acidic to neutral water. Keep temperature at 24-28 °C, pH at 6.0-7.5, and hardness at 3-12 dGH. Biweekly water changes are encouraged.

Compatibility and Cohabitation: Very peaceful. Unlike Tiger Barbs, they do not nip fins and can be kept with peaceful fish, shrimp, and dwarf cichlids.

Aquarium Breeding: Egg scatterer. Requires a dedicated breeding tank with soft water and spawning grids or moss. Remove parent pair post-spawning.

Risks and Diseases: Susceptible to external parasites in stressful conditions or if nitrate levels are allowed to rise.

Fish profile

Temperament
Pacifico
Diet
Onnivoro
Tank level
Metà
Minimum group
6
Adult size
5.5 cm
Minimum tank volume
80 L
GH
3 dGH - 12 dGH
KH
1 dKH - 5 dKH
TDS
n/a
Conductivity
n/a
Sex ratio
Branco
Feeding frequency
1-2 volte al giorno
Bioload
Basso
Flow
Moderato
Reproduction
Rilascia uova adesive tra la vegetazione fitta, senza cure parentali.
Compatibility & tankmates
Molto pacifico. Compatibile con piccoli pesci, gamberetti e coinquilini d'acqua tenera.

Ecological Estimates & Biological Models

Trophic level
2.9 ± 0.3 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5039
Bayesian Length-Weight
a = 0.01072, b = 3.02
VulnerabilityLow vulnerability (10 / 100)

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Other recommended species with similar care requirements and water parameters.

Last updated: 06/13/2026