Peacock Eel
Macrognathus siamensis
Water Parameters
About
Medium-sized spiny eel with ocelli (eye spots) on the dorsal fin that resemble peacock feathers. Smaller and more manageable than the fire eel. Its habit of burying itself in the sand is captivating.
Behavior & Temperament
Pacific night spiny eel that buries itself in the substrate during the day, exposing only its eyes. Shy but curious.
Feeding
Carnivore - bloodworms, brine shrimp, daphnia, small earthworms, mosquito larvae. May accept frozen foods. Feed at night or dusk.
Breeding
Rarely bred in captivity. Spawns among floating vegetation in the wild. Little information on reproduction in aquariums.
Care Notes
Soft sand substrate REQUIRED. Very secure lid (they escape easily). Plants with strong roots (may dig up). Hiding places. Feed at dusk. No copper‑based medications.
Compatibility
Peaceful with most fish. May eat very small fish (neons). Ideal with medium, calm fish. Good with corydoras, larger tetras, and peaceful cichlids.
Quick Summary
| Scientific Name | Macrognathus siamensis |
|---|---|
| Family | Mastacembelidae |
| Category | Fish |
| Care Level | Intermediate |
| Water Type | Freshwater |
| Max Size | 23.0 cm (9.1") |
| Min Tank | 200 L (53 gal) |
| Min Group | 1+ |
| Diet | Carnivore - bloodworms, brine shrimp, daphnia, small earthworms, mosquito larvae. May accept frozen foods. Feed at night or dusk. |
| Temperament | Pacific night spiny eel that buries itself in the substrate during the day, exposing only its eyes. Shy but curious. |
Track this species in your aquarium
Create a free account to add Peacock Eel to your tank and get personalized care tips.
Create Free Account