
Rosy Barb
Pethia conchonius
Family: Cyprinidae • Origin: South Asia
Rosy Barbs are large, colorful barbs that tolerate cool water. Males turn deep rosy pink when displaying. Hardy and active.
Is Rosy Barb Right for Your Tank?
Rosy Barb is an excellent choice for beginners — rated "beginner" difficulty (1/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. A 20-gallon tank minimum is standard — most community setups will accommodate them.
With a peaceful temperament, Rosy Barb makes a great community fish. They coexist well with other non-aggressive species of similar size. This is a schooling species — keep at least 6 together, or they may become stressed and display abnormal behavior. Expected lifespan: 5 years with proper care.
Common Mistakes with Rosy Barb
Keeping fewer than 6 together
Rosy Barb is a schooling species — they need a group of at least 6 to feel secure. Lone or paired individuals become stressed, hide constantly, and may develop health issues or aggression.
Putting them in a tank under 20 gallons
Many beginners underestimate tank size needs. Rosy Barb requires at least 20 gallons — ideally 30. Cramped tanks lead to stunted growth, aggression, and poor water quality.
Care Tips
- • Tolerates cool water (64-77°F)
- • Males turn deep pink when displaying
- • Keep in groups of 6+
- • Active — needs swimming space
- • May eat delicate plants
Feeding: Flakes, pellets, vegetables, frozen foods. Unfussy eater.
Compatibility Notes: Tolerates cooler water. Peaceful but active — may stress very shy fish. Can nip long fins occasionally.
Tank Setup & Water Parameters
Tank Requirements
- Minimum Tank Size
- 20 gallons
- Recommended Tank Size
- 30 gallons
- Swimming Level
- middle
- Minimum School Size
- 6+ fish
Water Parameters
- Temperature
- 64–77°F
- pH Range
- 6.5–7.5
- Hardness (dGH)
- 5–15
- Water Type
- freshwater
Behavior & Temperament
- Temperament
- peaceful
- Aggression Level
- 2/5
- Schooling
- Yes
- Territorial
- No
- Fin Nipper
- No
- Predatory
- No
- Diet Type
- omnivore
- Growth Rate
- fast
Tolerates cooler water. Peaceful but active — may stress very shy fish. Can nip long fins occasionally.
Breeding
- Breeding Type
- egg layer
- Breeding Difficulty
- easy
- Lifespan
- 5 years
Ideal For
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