Description
Black Diamond Catfish – Crystal Eyed Catfish – Hemibagrus wyckii
Introduction:
The Black Diamond Catfish (Hemibagrus wyckii), also known as the Crystal Eyed Catfish, is an exotic and striking species native to Southeast Asia. Known for its sleek, dark body and unique crystal-like eyes, this catfish is a favorite among advanced catfish hobbyists. Growing up to 28 inches in length, the Black Diamond Catfish is a nocturnal fish that requires specific care, including ample space and suitable water conditions. Its impressive appearance make it an interesting species for larger tanks.
1. Natural Habitat and Behavior
The Black Diamond Catfish is native to slow-moving rivers and streams in Southeast Asia, particularly in regions such as Thailand, Malaysia, and Borneo. It typically inhabits areas with dense vegetation, rocks, and submerged debris, where it can hide and forage for food. These catfish are nocturnal, meaning they are most active during the night, and spend much of the day hiding in caves or shaded areas.
2. Aquarium Setup
- Tank Size: A minimum of a 55-gallon (208 liters) tank is recommended for young specimens, though a larger tank will be required to keep this fish healthy long-term as it reaches maturity.
- Substrate: Fine gravel or sand is ideal for the Black Diamond Catfish. A soft substrate helps prevent damage to their barbels, and it mimics their natural riverbed environment.
- Decor: Provide plenty of hiding places, such as caves, driftwood, and plants. Rocks and roots will give them places to shelter and feel secure during the day.
- Water Conditions:
- Temperature: 75–82°F (24–28°C)
- pH: 6.5–7.5
- Hardness: 4–12 dGH
- Water flow: Moderate to strong flow is preferred, as it mimics the swift currents of their natural habitat.
- Lighting: Moderate lighting is best, as these fish are most active in dimmer conditions. Floating plants can help reduce light intensity and provide additional cover.
3. Diet and Feeding
The Black Diamond Catfish is an omnivorous bottom dweller that will accept a wide variety of foods:
- Staple Diet: High-quality sinking pellets, algae wafers, or catfish-specific foods designed for bottom feeders.
- Live/Frozen Foods: Supplement with live or frozen foods such as brine shrimp, bloodworms, earthworms, or daphnia.
- Vegetable Matter: They will also accept blanched vegetables, such as zucchini, spinach, or peas, to provide essential fiber.
- Feeding Schedule: Feed them 2–3 times a week, offering food that sinks to the bottom of the tank. As nocturnal feeders, it’s best to feed them in the evening or at night when they are most active.
4. Compatibility with Other Fish
The Black Diamond Catfish may be kept with other non-aggressive species:
- Ideal Tank Mates: Suitable tank mates may include bottom dwellers like other catfish and larger species that grow to a similar size.
- Caution: Avoid keeping it with highly territorial or aggressive species, as they may stress or harm each other.
- Social Behavior: While these catfish are generally solitary, they can be kept in groups if the tank is large enough to provide enough space and hiding places for each individual.
5. Common Challenges and Tips
- Water Quality: The Black Diamond Catfish is sensitive to poor water quality. Regular water changes (20–30% weekly) and strong filtration are essential for maintaining a healthy environment.
- Dietary Needs: This species has a varied diet, so providing a balance of plant and animal matter is key to keeping them healthy. Without sufficient fiber and nutrients, their coloration and overall health can suffer.
- Tank Maintenance: Make sure the tank has enough hiding spots to reduce stress, especially during the day when the fish is resting.
- Space Requirements: The Black Diamond Catfish requires ample swimming space, so ensure the tank is large enough to accommodate its size and behavior.
Conclusion
The Black Diamond Catfish (Hemibagrus wyckii) is a captivating species that adds both beauty and intrigue to larger aquariums or ponds. With its dark, sleek body and crystal-clear eyes, it’s a standout fish. While it requires a bit more care than some other catfish species, its unique appearance make it a rewarding addition to the right tank or pond setup.
