Rosy Barb

Pethia conchonius

Photo of aquarium fish Rosy Barb
Natural range
  • Northern India area
  • Bangladesh area
CyprinidsConservation status: Least concern LC

Family:Cyprinids (Cyprinidae)

Other scientific names: Barbus conchonius, Barbus conchonlus, Barbus pyrhopterus, Cyprinus conchonius, Puntius conchonius, Systomus conchonius

The Rosy Barb, scientifically known as Pethia conchonius, is a member of the Cyprinidae family. Its vibrant appearance is sure to catch the eye, and its high activity makes observing these fish a captivating experience, especially when kept in a large school.

Required aquarium volume
80 L
Size in aquarium
10 cm
Temperature
18 – 23 °C
Temperament
Peaceful, active/mobile
Parameters
Temperature18 – 23 °C
Water pHSlightly acidic (6) – Slightly alkaline (8)
Water dHSoft (5) – Very hard (19)
Water salinityno salt (freshwater)
Size in aquarium10 cm
Lifespan5 years
TemperamentPeaceful, active/mobile
Toward small fishnot a predator
Required aquarium volume80 L
Lightingmoderate (regular)
Substratesandy (regular, light)
Water flowmoderate
FeedingAny (universal)
CareSchooling (usually from 5–6 individuals and more)

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Rosy Barb get?

An adult reaches 10 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Rosy Barb need?

The minimum recommended volume is 80 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Rosy Barb need?

Temperature 18–23 °C, pH 6–8, hardness 5–19 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Rosy Barb live?

Around 5 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Rosy Barb aggressive?

Temperament: peaceful, active/mobile. Keep this in mind when choosing tank mates.

How many Rosy Barb should be kept together?

Recommended setup: schooling (usually from 5–6 individuals and more). Ignoring this is a common cause of stress and disease.

What does Rosy Barb eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Rosy Barb?

The scientific name of the species is Pethia conchonius, family Cyprinids (Cyprinidae). It also appears in the literature as: Barbus conchonius, Barbus conchonlus, Barbus pyrhopterus.

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