Red-Tailed Black Shark – Epalzeorhynchos bicolor

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Description

Red-Tailed Black Shark – Epalzeorhynchos bicolor

Introduction:
The Red-Tailed Black Shark (Epalzeorhynchos bicolor) is a striking, semi-aggressive freshwater fish recognized for its sleek, black body and vibrant red tail. This hardy fish can reach a length of 5-6 inches (12-15 cm), making it a suitable choice for mid- to large-sized aquariums. It is a popular choice for experienced hobbyists due to its unique appearance and engaging behaviors.

1. Natural Habitat and Behavior

Originating from the freshwater rivers and floodplains of Thailand, the Red-Tailed Black Shark naturally resides in fast-flowing waters with dense vegetation. It is a bottom-dweller and can be territorial, especially toward other similarly sized or shaped fish. In aquariums, they exhibit a curious and energetic nature, but they can become aggressive if their space is encroached upon.

2. Aquarium Setup

A 40-gallon tank or larger is recommended for a single Red-Tailed Black Shark to allow ample swimming space and territory. A sandy or smooth gravel substrate with hiding spots, such as driftwood, caves, and rocks, helps create a natural environment. These fish prefer water temperatures of 72-79°F (22-26°C) and a pH of 6.5-7.5. Moderate lighting and a strong filtration system are necessary to maintain water quality and provide mild current.

3. Diet and Feeding

Red-Tailed Black Sharks are omnivores and enjoy a varied diet. Provide a combination of high-quality sinking pellets or algae wafers alongside occasional live or frozen treats like bloodworms, brine shrimp, and daphnia for protein. They also graze on algae, so some vegetable matter like blanched zucchini or spinach can be beneficial. Feed once or twice daily in controlled amounts to prevent overfeeding.

4. Compatibility with Other Fish

The Red-Tailed Black Shark can be somewhat territorial and is best kept alone or with carefully chosen tank mates. Suitable tank mates include barbs, danios, gouramis, and larger tetras. Avoid keeping multiple Red-Tailed Black Sharks in the same tank unless it is exceptionally large, as they will exhibit aggression toward each other. Also, avoid pairing them with slow-moving or timid fish that may get harassed.

5. Common Challenges and Tips

  • Territorial Nature: Due to its aggressive tendencies, ensure sufficient hiding spots and space to prevent territorial disputes.
  • Water Quality Maintenance: Like most freshwater fish, Red-Tailed Black Sharks are sensitive to poor water quality, so regular water changes and a strong filtration system are essential.
  • Single Specimen or Large Tank: If you plan to house multiple Red-Tailed Black Sharks, only attempt this in a very large tank to prevent fighting.

Conclusion

The Red-Tailed Black Shark (Epalzeorhynchos bicolor) is a visually captivating addition to any mid- to large-sized freshwater aquarium. Its bold coloration and active nature make it an attractive choice for hobbyists. With proper care, space, and the right tank mates, this striking fish can thrive and add personality to a freshwater setup.

Additional information

Size

Small 2"-3", Medium 3"-4", Large 4"-5", XL 5"-6"