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Species profile

Rosy Barb

Pethia conchonius

Common names: Rosy Barb, Red Barb

Recognized speciesBarbs
Rosy Barb (Pethia conchonius)

Adult size

Up to 10 cm

Typical adult length 8–10 cm.

Up to 10 cm

Countries of origin

  • See all stock from Afghanistan
  • See all stock from Bangladesh
  • See all stock from India
  • See all stock from Myanmar
  • See all stock from Nepal
  • See all stock from Pakistan

Good fit for your tank?

Good fit for

  • A cooler or unheated aquarium of good length
  • A robust community with active fish
  • A keeper who wants a very hardy shoaling fish

Think carefully if

  • You keep warm-water tropical fish
  • You have delicate plants
  • You keep long-finned or very small fish

A hardy, cool-tolerant barb from South Asia that grows larger than many expect. Males turn rosy red when ready to spawn, and it may nibble on soft plants.

Appearance and Identification

A deep, silvery to bronze body with a dark spot near the tail. Males develop a strong rosy red colour with dark fin tips, while females are golden and plainer.

The dark spot near the tail plus a rosy flank are the key features. Long-finned and neon forms are the same species.

Males are smaller, slimmer, and more colourful than females. During spawning, males develop tubercles on the head and snout.

Tank Requirements

Suggested filter
About 360–450 litres an hour
Minimum tank volume
90 litres
Minimum tank length
100 cm
Minimum group size
8
Recommended group size
10
Activity level
Very active
Flow preference
Moderate
Planting preference
Moderately planted
Lid recommended
Yes
Jumping risk
Moderate

Provide long swimming space and hardy plants, because soft plants may be nibbled. A lid helps to stop this active fish from jumping.

Behaviour and Tankmates

Very active, with frequent chasing inside the group. Larger groups keep this energy within the shoal.

Keep at least 8 to 10.

Not territorial, although males display and chase during spawning.

Good with other cool-tolerant, active fish such as gold barbs, odessa barbs, and danios. Avoid long-finned fish and very small fish or shrimp.

Check tankmates for this species

Water Parameters

Temperature
16–24 °C
pH
6–8
GH
5–20
Stability importance
Normal

A subtropical fish that prefers cooler water. Keep the water clean and well oxygenated.

Parameter caveat
Long periods in warm water are not ideal for this fish. Acclimate slowly.

Feeding

Diet types
Herbivore, Insectivore, Omnivore
Feeding frequency
Once or twice daily
Preferred foods
  • Quality flake or small granulesUse as the daily staple and scatter it so every fish in the group can reach food.
  • Frozen or live bloodworm, daphnia, and brine shrimpOffer a few times a week to improve condition and colour.
  • Spirulina flake or blanched vegetablesBarbs graze as well as hunt, so include some plant matter each week.

An omnivore with a good appetite for plant matter as well as small invertebrates.

Plenty of plant matter in the diet can reduce nibbling on aquarium plants.

Breeding

Breeding type
Egg Scatterer
Breeding difficulty
Easy
Brood or egg count
Often several hundred eggs
Incubation
2 days
Parental care
None
Baby foods
  • Infusoria or parameciumNeeded for the first days after fry become free-swimming, because the fry are very small.
  • Fine powdered fry foodUse sparingly as a supplement, and siphon out anything left uneaten.
  • Newly hatched brine shrimpIntroduce once the fry are large enough to swallow it, usually after several days.
  • MicrowormsA useful next step for fry that are still too small for brine shrimp.

An egg-scattering free spawner with no parental care. Adults may eat their eggs, so remove them after spawning. Eggs hatch in 24 to 48 hours, and fine-leaved plants or mesh help protect them.

Habitat and Origin

Geographic origin
Afghanistan, Bangladesh, India, Myanmar, Nepal, Pakistan, South Asia
Natural habitat
Freshwater River, Freshwater Stream, Lake, Pond
Aquarium contexts
Breeding Aquarium, Temperate Aquarium
Audience level
Beginner

Classification

Profile type
Recognized species
Genus
Pethia
Family
Cyprinidae
Species group
Barbs, Fish
Previous scientific names
Puntius conchonius, An older name still widely used in shops and books.

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