Overview
The Peacock Spiny Eel is a visually striking addition to the freshwater aquarium. Known for its iridescent blue, red, and black coloration, it offers a unique aesthetic experience. These eels are generally peaceful, but their slender, elongated bodies and spines require a spacious tank to prevent injury and stress. They are not schoolers and prefer a moderate activity level. Keeping the water parameters stable is crucial for their health.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Mastacembelidae |
| Genus | Macrognathus |
| Species | Macrognathus siamensis |
| Water type | freshwater |
Natural Habitat
Native to slow-moving streams and floodplains in South Asia, the Peacock Spiny Eel thrives in warm, well-oxygenated waters.
Appearance
They have a sleek, elongated body with a long, pointed snout and a series of spines along the back.
Behavior
These eels are generally peaceful and do not exhibit aggressive behavior. However, they are curious and may show some territorial behavior. Providing ample swimming space and cover can help reduce stress and aggression.
| Trait | Value |
|---|---|
| Temperament | elegant and curious |
| Schooling | No |
| Activity level | moderate |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 24–28°C (75–82°F) | Use a reliable adjustable heater |
| pH | 6–7 | Avoid sudden swings |
| Hardness (GH) | 5-15 dGH dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <20 ppm | Manage through regular partial water changes |
| Min. tank | 100L (26 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- They can change color based on their mood or environment.
- Spines along the back are used for protection and can be a cause of injury.
- Peacock Spiny Eels are nocturnal and primarily active at night.
📋 Full Care Guide
Ready to set up a tank for your Peacock Spiny Eel? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Peacock Spiny Eel Care Guide →Related Species
Related Species & Guides
This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.