Are there any animals that hunt electric eels other than man?

I can't find any evidence that any non-human animals hunt electric eels. Wikipedia states that ... I know very little about electric eels, other than The electric eel is an electric fish, and the only species in that genus. Despite the ... The electric eel is known as a top predator with few animals willing to take it on. read more

I know very little about electric eels, other than The electric eel is an electric fish, and the only species in that genus. Despite the name, it is not an eel, but rather a knifefish. As obligate air-breathers, electric eels must rise to the surface every ten minutes or so to inhale before returning to the bottom. read more

In captivity, an eel must be kept in a tank no smaller than 100 gallons and should be the sole inhabitant of its artificial environment. Adult eels will generally tolerate one another, but young eels will fight for supremacy and eels of any age will attack other fish. Occasionally, eels are also used as a food source. read more