description Fire eel Overview
The fire eel (Mastacembelus erythrotaenia) is a large freshwater fish belonging to the spiny eel family, Mastacembelidae. Native to river environments across Southeast Asia, including Thailand and Vietnam, it is recognized by its elongated body and vivid red and orange lateral markings. Despite its common name, it is not a true eel but is frequently kept in the aquarium trade due to its distinctive appearance. They require large tanks with soft substrates.
help Fire eel FAQ
Is the fire eel actually a true eel?
No, Mastacembelus erythrotaenia is a spiny eel, a group of elongated freshwater fishes rather than members of the true-eel order Anguilliformes. Its long snout and row of separate dorsal spines help distinguish it.
How large an aquarium does an adult fire eel need?
A fire eel can grow well beyond 60 centimeters and exceptionally approach 1 meter, so adults need a very large tank with ample floor area. Soft sand, hiding tubes and a tightly secured lid are more important than tall open water.
What do fire eels eat?
They are bottom-oriented predators that take worms, insect larvae, crustaceans and other animal foods. Aquarium specimens often accept earthworms, shrimp and prepared carnivore foods, although newly acquired fish may refuse dry pellets.
Where do fire eels come from?
The species is native to Southeast Asian fresh waters, including major river systems in countries such as Thailand, Cambodia and Indonesia. Its red or orange markings become particularly vivid against the dark body of a mature fish.
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