Rosy Barb

Pethia conchonius

Rosy Barb (Pethia conchonius) — Easy care, Peaceful, under Barb & Shark. Minimum tank in the app: 29 US gal min; aim for 59–75°F and pH 6–7.5. Rosy Barbs are ideal for active aquarists looking to enhance mid-water dynamics in a community tank.

Rosy Barb (Pethia conchonius) in a planted freshwater aquarium
Care levelEasy
TemperamentPeaceful
Min tank size29 US gal min
pH range6–7.5
Temperature59–75°F
Max size3.1 in (8.0 cm)
Captive lifespan4–10 years
SchoolingYes · 6+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

South Asia

  • East & Southeast Asia

Regional colours match the stocking calculator’s origin map.

Rosy Barb Tank Setup

Creating a spacious layout with ample open swimming areas complemented by plants or decor for hiding spots promotes active engagement. Moderate water flow enhances their natural behavior while providing a comfortable substrate encourages foraging. Lighting should be balanced to prevent stress, as overly bright conditions can lead to skittishness.

What Do Rosy Barbs Eat?

Rosy Barbs are enthusiastic feeders, often competing for food, which can lead to aggressive behavior if not monitored. A varied diet including high-quality flake, pellets, and occasional live or frozen foods will ensure optimal health and enhance their coloration.

Rosy Barb Tank Mates

Best paired with similarly sized, active species that can hold their own against the Rosy Barb's semi-aggressive tendencies. Avoid long-finned fish, which are prone to nipping. Intraspecies dynamics benefit from larger groups, ideally exceeding six, to diffuse aggression and promote social harmony.

Are Rosy Barbs Good for Beginners?

In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the need for group size and environmental complexity, resulting in stress and aggression. neglecting to monitor tankmate compatibility can lead to fin damage and overall disharmony in the tank.

Building a community? Run the full list through the stocking calculator before you add anything else.

Log tests and reminders in App-aquatic—free, same data you see here.