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Golden Dwarf Barb

Puntius gelius

A small and very calm freshwater cyprinid, preferring slightly cooler temperatures than the tropical average.

Family
Cyprinidae
Origin
Asia: Ganges and Brahmaputra River basins in India, Bangladesh, and Nepal.
Origin
South and Southeast Asia
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

18 °C - 25 °C

pH Value

6 - 7

Water type

Freshwater

Tank level

Metà

Adult size

4 cm

Species description

Geographical Origin and Habitat: Widely distributed in the Ganges and Brahmaputra basins in India and Bangladesh. Inhabits shallow, slow-moving waters.

Taxonomy and Morphology: Also classified as Pethia gelius. Nano species, reaching a size of just 3.5-4 cm. Short and deep body shape.

Social Behavior: Peaceful and somewhat shy schooling fish. Must be kept in a group of 6 to 10 to reduce stress and encourage active swimming.

Coloration and Sexual Dimorphism: Translucent golden-yellow body with irregular black markings. Males show a reddish horizontal stripe when spawning.

Care, breeding and tankmates

Aquarium Setup: Minimum 60-liter tank with dense planting and floating plants to diffuse lighting. Dark substrate helps highlight colors.

Diet and Feeding: Omnivorous with a small mouth. Feed very fine flakes or micro pellets. Supplement with daphnia and baby brine shrimp.

Water Quality: Keep pH between 6.0 and 7.0, and GH between 4 and 14. Prefers cooler water (18-25°C). Avoid prolonged high temperatures.

Compatibility and Cohabitation: Ideal for quiet community aquariums with other tiny species like rasboras or corydoras. Avoid large, boisterous tankmates.

Aquarium Breeding: Egg-scatterer. Scatter eggs over fine mosses. Parents eat their spawn; use a separate breeding tank for successful hatching.

Risks and Diseases: Highly sensitive to overheating. Water temperatures consistently above 26°C can decrease their lifespan considerably.

Fish profile

Temperament
Pacifico
Diet
Onnivoro
Tank level
Metà
Minimum group
6
Adult size
4 cm
Minimum tank volume
60 L
GH
4 dGH - 14 dGH
KH
2 dKH - 8 dKH
TDS
n/a
Conductivity
n/a

Ecological Estimates & Biological Models

Trophic level
3.3 ± 0.41 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.01023, b = 2.99
VulnerabilityLow vulnerability (10 / 100)

Image gallery

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

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Last updated: 06/13/2026