Golden Fire Eel (Mastacembelus erythrotaenia)
The Golden Fire Eel is a spectacular large freshwater spiny eel admired for its elongated body, rich golden to orange-red markings and secretive bottom-dwelling behaviour. This colour form of the Fire Eel is best suited to very large mature aquariums with soft substrate, excellent filtration, secure covers and carefully chosen tankmates. Although juveniles are often sold at a manageable size, this is a specialist predatory fish that grows very large and needs long-term planning.
Common Name
Golden Fire Eel, Fire Eel, Fire Spiny Eel, Golden Fire Spiny Eel
Scientific Name (Latin)
Mastacembelus erythrotaenia
Strain / Form
Golden / high-col
| Size | Adult Length |
|---|---|
| Typical Growth | Over 1 meter (3+ feet) in mature specimens |
| Water Conditions | Temperature Range |
| Soft substrate | 24–28°C (75–82°F) |
| Water pH | 6.0–7.0 |
| Water Hardness | Soft to moderately soft (2–8 dGH) |
FAQ
What is the typical adult size of a Golden Fire Eel?
The Golden Fire Eel can grow over 1 meter (3+ feet) in mature specimens.
What kind of aquarium setup is required for this eel?
A very large mature aquarium with soft substrate, excellent filtration, secure covers, and carefully chosen tankmates is required.
Is the Golden Fire Eel suitable for beginner aquarists?
No, this is a specialist predatory fish that requires long-term planning and a large, well-maintained aquarium. It is not recommended for beginner aquarists.
Melanie Miller –
Bought this eel for my 300-gallon tank after researching long-term freshwater species. The golden coloration is striking and it’s very active at night. I’ve had it for six months and it’s thriving. Only issue is it needs a very secure lid due to its bottom-dwelling habits and tendency to hide in crevices.
Steven Rees –
The eel arrived healthy and looks vibrant. It’s not aggressive but does require a large tank and specific water parameters. I’ve adjusted the pH and hardness to match its needs. It’s become a centerpiece of my aquarium and the color is truly unique.
Brian Hudson –
It’s impressive to see how it moves through the substrate. I’m still adjusting the tank setup to ensure it has enough space and hiding spots. I’m cautious about adding new fish due to its predatory nature.