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Care guide · Freshwater · fish

Golden barb

Barbodes semifasciolatus

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The golden barb (Barbodes semifasciolatus), also called the Chinese or green barb, is an active but generally peaceful shoaling fish. The popular golden form is a selectively bred colour form of the same species; wild fish are greener. Seriously Fish lists up to 75 mm standard length and recommends an aquarium with a base of at least 90 × 30 cm, about 81 litres. Keep a group of eight to ten. The species tolerates a broad range of water conditions, but companions should be selected carefully for adult size, activity and temperature.

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At a glance

Temperature
16–24 °C
pH
6.0–8.0
GH
2–20 °dGH
Aquarium length
At least 90 cm
Minimum aquarium volume
At least 81 L
Adult size
Up to 7.5 cm
Group size
At least 8–10 individuals
Temperament
Peaceful

About this species

The species was described as Barbus semifasciolatus and has also been called Puntius semifasciolatus. The sources consulted use Barbodes semifasciolatus. Puntius schuberti is a trade or literature label for the golden ornamental strain, not a valid scientific species name. Wild green and golden aquarium forms belong to the same species. The golden strain is mass-produced; inspect fins and body shape when buying because deformities can occur in commercial breeding lines.

Natural habitat

Barbodes semifasciolatus occurs in Vietnam, Taiwan, southwestern China and northern Laos. It is found in slower tributaries and still waters, including swamps and irrigation channels. Dense aquatic or riparian vegetation is typical, and shoals often stay close to the substrate. This supports an aquarium with planted margins, open swimming space and moderate flow; it does not justify copying one local water measurement as a universal target.

Aquarium and layout

Use a minimum base of 90 × 30 cm and about 81 litres for a group of eight to ten. Combine open swimming space with planted or sheltered edges. Floating plants can diffuse light, while wood and plants add structure. The fish is hardy, but still needs clean, stable water and mature filtration. A dark substrate may enhance its colour. Give the shoal room and ensure tankmates do not outcompete it at feeding time.

Water conditions

Seriously Fish gives 16–24 °C, pH 6.0–8.0 and GH 2–20 dGH. These are broad practical aquarium ranges, not targets that require pushing conditions to their extremes. Stability and gradual acclimation matter more than rapid correction. Consider the source and acclimation history of the fish. Because this species can be kept relatively cool, warm-water companions are not automatically suitable even when other parameters overlap.

Behaviour and group size

The golden barb is peaceful and social and should be kept in a group of eight to ten. Select companions by adult size, swimming zone, activity, temperature and feeding access. Other calm fish of comparable size are more plausible candidates than tiny or timid species that may be outcompeted. Matching water values alone does not establish compatibility. No individually verified species-pair relationships have been added here; assess combinations against the actual species and aquarium layout.

Feeding

This species is an omnivorous forager. In nature it eats benthic diatoms, algae, organic detritus, small insects, worms, crustaceans and zooplankton. Use complete flakes or small granules as the staple, ideally including plant or algal ingredients. Supplement with suitable small portions of frozen or live foods such as Daphnia, Artemia or insect larvae. Offer variety without replacing the complete staple and remove leftovers.

Breeding

The golden barb is an egg-scattering free spawner with no parental care. A few fry may appear in a mature aquarium, but adults will eat eggs they find. For deliberate breeding, condition adults and then use a separate, dimly lit spawning tank. Add an egg grid, marbles, fine-leaved plants or spawning mops and remove adults after spawning. Seriously Fish reports hatching in 24–48 hours and free swimming about a day later; begin with infusoria-grade food.

Sources & review

This care guide draws on several specialist sources and was last checked on .

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