Black Ruby Barb

Overview

The Black Ruby Barb (Pethia nigrofasciata) is a striking schooling barb from Sri Lanka. Males develop dramatic deep red-black colouration during breeding, contrasting with their silver-grey non-breeding appearance.

Water Parameters

• Temperature: 22–27°C (72–81°F)
• pH: 6.0–7.5
• Hardness: 5–12 dGH

Tank Setup

• Minimum tank size: 75 litres for 6+
• Decor: Planted with open swimming space; dark substrate enhances colour

Diet

• Base: Quality flake, granules
• Treats: Frozen bloodworms, brine shrimp, blanched vegetables

Temperament & Tank Mates

• Temperament: Peaceful schooling fish
• Best companions: Other tetras, rasboras, corydoras, gouramis
• Schooling: Minimum 6; males display colour best in groups

Common Issues

• Colour fades with stress; maintain stable water quality
• Hardy once established
• Lifespan: 3–5 years