[toast0]

They are raised on fish farms, from capture to prime eating conditions, but eel spawning is mysterious and at least Wikipedia suggests eel reproduction is not currently reproducable in captivity.

[brightbeige]

There is a pretty fascinating New Yorker article which summarizes the “Book of Eels”

https://www.newyorker.com/magazine/2020/05/25/where-do-eels-...