Black Ruby Barb

Pethia nigrofasciata

BarbsBeginner
Check CompatibilityBuild Tank

Species Details

Black Ruby Barbs are beautiful Sri Lankan fish where males develop stunning black bodies with bright red fins during breeding season. They are peaceful, hardy fish ideal for community aquariums.

Beginner Care Level

Basic Information

Size6 cm (2.5 inches)
TemperamentPeaceful
DietOmnivorous
Lifespan4-6 years
Tank Size76+ litres (20+ gallons)

Water Parameters

Temperature
22-26°C (72-79°F)
pH Level
6.0-7.0
Hardness
5-12 dGH

Tank Mate Recommendations

Based on 1 selected species

Current Selection:

Black Ruby Barb
Fully Compatible Species
Compatible

Tanganyikan Cichlids

Various Lamprologus, Julidochromis, Neolamprologus

Cichlids
Size:5-20 cm (2-8 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
100%
Compatible

Tetras

Various Tetra species

Characins
Size:2.5-7.5 cm (1-3 inches)
Care Level:Beginner
Temperament:Peaceful
100%
Compatible

Pleco Catfish

Various Hypostomus, Pterygoplichthys species

Catfish
Size:15-45 cm (6-18 inches)
Care Level:Intermediate
Temperament:Peaceful but territorial
100%
Compatible

Barbs

Various Barbus, Puntius species

Cyprinids
Size:5-15 cm (2-6 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
100%
Compatible

Danios & Minnows

Various Danio, Devario species

Cyprinids
Size:3-10 cm (1-4 inches)
Care Level:Beginner
Temperament:Peaceful
100%
Compatible

Gouramis

Various Trichogaster, Colisa species

Anabantoids
Size:5-25 cm (2-10 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
100%

💡 Tank Mate Tips

• Consider adult size when planning tank space

• Research specific water parameter requirements

• Introduce new fish gradually to reduce stress

• Monitor behavior closely during the first weeks

Quick Facts

Males develop striking black and red breeding colours

Peaceful barb ideal for community aquariums

Endemic to Sri Lankan hill streams

Beautiful colour changes during breeding

Smaller size suitable for medium aquariums

Active schooling behaviour in groups

Hardy and disease-resistant

Easy to breed with proper setup

Less aggressive than tiger barbs

Popular among aquarists for colours

Compatibility Summary

Compatible Species6
Requires Caution6
View full compatibility analysis →

Care Requirements

Tank Size76+ litres (20+ gallons)
Temperature22-26°C (72-79°F)
pH6.0-7.0
Hardness5-12 dGH

Related Actions

Browse All Species
Explore other freshwater fish
Shop Products
Find supplies for this species