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One Piece

Episode 31: “The Worst Man in the Eastern Seas! Fishman Pirate Arlong!”

One Piece · 東の海最悪の男!魚人海賊アーロン!
  • 31 of 1180
  • July 12, 2000
  • 24 min
  • Aired
10 languages
From Acino, the anime encyclopedia
Contents
  1. Summary
  2. Music in this episode
  3. Where to watch
  4. Episode guide
  5. About the series
  6. References
“The Worst Man in the Eastern Seas! Fishman Pirate Arlong!”
SeriesOne Piece
Episode31 of 1180
Japanese東の海最悪の男!魚人海賊アーロン!
Original air dateJuly 12, 2000
Episode length24 min
StudioToei Animation
Previous episodeEpisode 30: “Set Sail! The Seafaring Cook Sets off With Luffy!”
Next episodeEpisode 32: “Witch of Cocoyashi Village! Arlong's Female Leader!”
StreamingCrunchyroll, Netflix, Hulu

“The Worst Man in the Eastern Seas! Fishman Pirate Arlong!” is episode 31 of the anime One Piece. It first aired on July 12, 2000.

Summary

A summary of this episode has not been written yet.

Music in this episode

Where to watch

Streaming services that list One Piece. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.

Episode guide

All 1,180 episodes →

About the series

One Piece
One PieceTV series · 1999 · 1180 episodes · Toei Animation · ★ 8.72

The anime follows Monkey D. Luffy and his crew as they travel across the Grand Line in search of the greatest treasure in the world, One Piece. Luffy's reason for being a pirate is one of pure wonder and adventure, driven by his childhood hero, the Pirate King. The series is known for its crazy adventures, dark…

Read the article →

References

  1. “One Piece”. Kitsu. Retrieved October 27, 2026.
  2. “One Piece”. MyAnimeList. Retrieved October 27, 2026.
  3. “One Piece”. AnimeThemes. Retrieved October 27, 2026.

Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.