Black Ruby Barb

The Black Ruby Barb is a Sri Lankan schooling fish prized for the deep red and dark coloration mature males can develop. Females and younger fish usually retain a paler, more clearly banded appearance. A planted aquarium and a comfortable social group help bring out its natural colors.

Fish details

• Scientific name: Pethia nigrofasciata
• Size offered: Approximately 5–6 cm. Select the listed option above.
• Adult size: Approximately 5–7 cm.
• Water type: Freshwater
• Temperament: Generally peaceful and social; may become shy or unsettled in a small group.
• Recommended aquarium: 30 gallons or larger for a comfortable school.
• Group size: Keep at least 6; a group of 8–10 is preferable.
• Temperature: 72–79°F (22–26°C)
• pH: 6.0–7.5

Aquarium setup

Use plants, driftwood, and shaded areas around an open swimming space. A dark substrate can complement the fish’s coloration. Provide gentle-to-moderate filtration, a secure lid, and consistently clean, well-oxygenated freshwater.

Diet and feeding

Feed small flakes or pellets, including vegetable or spirulina-based foods. Supplement with small frozen foods such as daphnia and brine shrimp. Give manageable portions rather than one large feeding.

Compatibility

Suitable companions include peaceful rasboras, tetras, and appropriately sized bottom dwellers that share its water requirements. Avoid aggressive fish, very boisterous feeders, and delicate long-finned companions. Small shrimp and fry are not guaranteed safe. Color and sex cannot be assumed from the reference photo.

Ordering information: Sizes are approximate. Color, markings, and maturity vary by fish. Please call Las Vegas Exotic Fish at (702) 685-5100 to confirm current availability or ask about a suitable aquarium.