Golden Dwarf Barb Care Guide
Pethia gelius is a tiny golden barb from the Ganges and Brahmaputra drainages. A very peaceful, cool-tolerant nano fish for soft-water tanks.
Compiled by Aquairi from published sources · Published · Updated
Overview
Pethia gelius, the golden dwarf barb, is a very small cyprinid from northern South Asia. It was formerly placed in the genus Puntius and was reclassified to Pethia in 2012. The fish has a golden body marked with subtle dark blotches and is well suited to peaceful, soft-water nano aquaria.
Taxonomy
- Family: Cyprinidae
- Genus: Pethia
- Scientific name: Pethia gelius
- Former name: Puntius gelius
Habitat
The species is native to the Ganges and Brahmaputra river drainages in northern India, Nepal and Bangladesh. It inhabits shallow, slow-moving streams passing through agricultural areas, over muddy substrates and with minimal water flow.
Tank requirements
- Minimum tank volume: 60 L (about 16 gal)
- Temperature: 18-26 °C (64-79 °F)
- pH: 6.0-7.5
- GH: 5-15 °dGH
- School size: at least 6, ideally 8-10 individuals
- Lifespan: 3-5 years
Diet
In nature it is a micropredator feeding on small insects and crustaceans. In the aquarium it should receive small live and frozen foods such as Daphnia and Artemia, supplemented with good-quality flakes and granules.
Compatibility
The golden dwarf barb is very peaceful but timid, and is a schooling species that should be kept in a group to reduce nervousness and encourage natural behaviour. Its small size and shy nature make it best suited to quiet aquaria with other diminutive species and freshwater shrimp rather than boisterous community tanks.
Breeding
It is an egg-scattering spawner with no parental care. Eggs hatch in about 24 to 36 hours, the fry becoming free-swimming after three to four days and initially requiring very small infusoria-grade foods.
Golden Dwarf Barb (Pethia gelius) Breeding Guide
Overview
Pethia gelius is a small barb native to the Ganges and Brahmaputra drainages in northern India, Nepal and Bangladesh, reaching about 35-40 mm standard length. It is an egg-scattering free spawner with no parental care that, in good condition, will spawn often.
Sexing
Mature females are noticeably rounder-bellied, often a little larger, and less intensely coloured than males. Conditioned, gravid females are the easiest to identify.
Conditioning
Adults can be conditioned together in good condition and will spawn often; a varied diet with live and frozen foods brings females into roe.
Breeding Setup
Use a dimly lit breeding tank with mature water. Cover the base with a mesh of a grade large enough that eggs can fall through but small enough that adults cannot reach them; fine-leaved plants such as Taxiphyllum or spawning mops work well. Add an air-powered sponge filter or air stones for oxygenation, with slightly acidic to neutral pH and temperature toward the upper end of the range.
Spawning Behavior & Trigger
Well-conditioned fish scatter eggs over the medium, which fall through out of reach. The species spawns readily when warm and well fed.
Egg & Fry Care
The adults will probably eat the eggs given the chance and should be removed as soon as any are noticed. Eggs hatch in 24-36 hours, with fry free-swimming after 3-4 days. Provide infusoria-grade food for the first few days until they are large enough to accept microworm, Artemia nauplii, or similar.
Common Challenges
Because the fry are tiny, an extended supply of infusoria-grade food is essential before they reach Artemia size. An egg-trap base and prompt removal of adults prevent egg loss.