Enlarge / Disney+ promotional art for The Fable, an anime series that triggered Animeflix takedown notices. (credit: Disney+)

Thousands of anime fans were shocked Thursday when the popular piracy site Animeflix voluntarily shut down without explaining why, TorrentFreak reported.

"It is with a heavy heart that we announce the closure of Animeflix," the site's operators told users in a Discord with 35,000 members. "After careful consideration, we have decided to shut down our service effective immediately. We deeply appreciate your support and enthusiasm over the years."

Prior to its shutdown, Animeflix attracted millions of monthly visits, TorrentFreak reported. It was preferred by some anime fans for its clean interface, with one fan on Reddit describing Animeflix as the "Netflix of anime."