Description
Zig-Zag Eel (Mastacembelus armatus)
Introduction:
The Zig-Zag Eel (Mastacembelus armatus) is a captivating species with a distinct pattern and an impressive size that can reach up to 36 inches (91 cm) in large aquariums. Known for its peaceful nature, this eel makes an intriguing addition to spacious tanks and is highly favored by aquarists who appreciate its unique look and secretive behaviors.
1. Natural Habitat and Behavior of Zig-Zag Eels
Zig-Zag Eels are found in the slow-moving rivers, streams, and flooded plains of Southeast Asia, often hiding among plants, mud, or debris during the day. In their natural environment, they are nocturnal and predatory, feeding on small invertebrates and fish. In aquariums, they retain this nocturnal and secretive behavior, often burrowing into the substrate or hiding among decorations during the day, becoming more active at night when hunting for food.
2. Zig-Zag Eel Aquarium Setup
- Tank size: These eels can grow up to 3 feet in length, requiring a minimum tank size of 125 gallons. Larger tanks are recommended for adult specimens.
- Substrate: A soft sand or fine gravel substrate is ideal, as Zig-Zag Eels like to burrow. Sharp substrates should be avoided to prevent injuries.
- Decor: Provide plenty of hiding spots using driftwood, rocks, and PVC pipes. Ensure that all decor is stable, as the eel may burrow under or around it.
- Water conditions: Maintain water temperatures between 74°F and 82°F, with a pH range of 6.5 to 7.5. These eels prefer slightly soft to moderately hard water.
- Lighting: Low lighting is preferred, as Zig-Zag Eels are nocturnal and feel more comfortable in dim environments.
3. Diet and Feeding of Zig-Zag Eels
Zig-Zag Eels are carnivorous and thrive on a protein-rich diet. In captivity, they should be fed live or frozen foods such as bloodworms, earthworms, shrimp, and small fish. Over time, they may accept carnivore pellets or other prepared foods, but live or frozen options are preferable to keep them healthy. Feeding should be done in the evening or at night, aligning with their nocturnal activity.
4. Compatibility with Other Fish
While generally peaceful, Zig-Zag Eels can become territorial and predatory toward smaller tank mates. They are best kept with larger, non-aggressive fish such as cichlids, large catfish, or other robust species. Small fish should be avoided, as they may be viewed as food. It’s essential to provide enough space and hiding spots to reduce territorial behavior and ensure the eel feels secure.
5. Common Challenges and Tips
- Shyness: Zig-Zag Eels are naturally shy and may take time to become comfortable in a new environment. Provide plenty of hiding places to help them feel secure.
- Escape risk: Like many eels, they are skilled escape artists. Make sure the aquarium is tightly covered to prevent escapes.
- Water quality: They are sensitive to poor water conditions, so regular water changes and efficient filtration are necessary to maintain optimal water quality.
- Feeding adjustment: Patience may be needed when acclimating Zig-Zag Eels to non-live food, as they may initially refuse pellets or frozen options.
Conclusion
The Zig-Zag Eel (Mastacembelus armatus) is an impressive and intriguing species, suitable for large aquariums and experienced hobbyists. With their distinctive patterns and nocturnal behaviors, they add an exotic touch to freshwater setups. While their size and specific care needs require commitment, the reward of keeping such a unique and engaging species makes it worth the effort. Ensure a spacious tank, a diet rich in live or frozen foods, and appropriate tank mates to help your Zig-Zag Eel thrive in captivity.
