⚫ Black Ruby Barb Care Guide (Pethia nigrofasciata)
🌟 Overview The Black Ruby Barb (Pethia nigrofasciata) is a striking schooling fish native to Sri Lanka. Males develop deep ruby-red coloration with contrasting black vertical bars, especially during breeding. Hardy and active, Black Ruby Barbs are perfect for medium-sized community tanks with plenty of plants and swimming space.
🔑 Quick Facts
- Scientific Name: Pethia nigrofasciata
- Common Name: Black Ruby Barb
- Origin: Sri Lanka
- Size: 2–2.5 inches (5–6 cm)
- Lifespan: 4–6 years
- Temperament: Semi-aggressive, active schooling fish
- Care Level: Easy
🏠 Tank Requirements
- Minimum Tank Size: 30 gallons (for a proper school)
- Water Temperature: 72–79°F (22–26°C)
- pH: 6.0–7.5
- Hardness: 5–12 dGH
- Aquascape: Planted aquariums with open swimming space and hiding spots
- School Size: Keep in groups of 6 or more to reduce aggression
🍽️ Diet
Black Ruby Barbs are omnivores and thrive on a balanced diet:
- High-quality flakes & sinking pellets
- Frozen/live foods: brine shrimp, bloodworms, daphnia
- Vegetable matter: blanched spinach, zucchini, peas
- A varied diet enhances their ruby coloration
🧑🤝🧑 Tank Mates
- Good with other active, similar-sized community fish: tetras, rasboras, danios, rainbowfish
- Compatible with bottom dwellers like corydoras and loaches
- Avoid slow or long-finned fish (bettas, angelfish, guppies) that may be fin-nipped
🧠 Behavior & Tips
- Males show brighter ruby-red coloration, especially when courting
- Keep in larger schools for more natural behavior and reduced stress
- Active swimmers that appreciate planted tanks with open water
- Hardy and beginner-friendly if kept in proper groups
❓ FAQ
Q: How many Black Ruby Barbs should I keep together?
A: At least 6 or more, as they are schooling fish. Smaller groups may become aggressive.
Q: Do Black Ruby Barbs nip fins?
A: They can, especially in small groups. A large school helps minimize nipping behavior.
Q: How long do Black Ruby Barbs live?
A: Typically 4–6 years with good care.
Q: Are they beginner-friendly?
A: Yes, they are hardy and adaptable, making them great for new aquarists.
