Rosario is a non-canon foe from the sixth One Piece film, Baron Omatsuri and the Secret Island. An enormous goldfish kept by the pirate Muchigoro, she briefly stands in the Straw Hats' way during one of the island's deadly trials.
Rosario is an oversized red fish protected by a tough metallic shell. Jewels stud the upper portion of that shell as well as a spot on her forehead.
Her inner nature stays mostly a mystery, but she shows enough wits to carry out the commands Muchigoro gives her.

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At some earlier point the goldfish came under Muchigoro's care as the pet of the Red Arrows Pirates. Because she lacks the sprout that grows from the heads of the crew's revived members, it appears she joined after that resurrection rather than before. When the Straw Hat Pirates took on Baron Omatsuri's first Trial of Hell, they assumed the task was scooping up small goldfish, only to learn they had to capture Rosario away from Muchigoro instead. The crew failed repeatedly, Luffy even tearing the flimsy net he was handed, and Muchigoro tried to bag her in his own larger net before Robin blocked the move. After much tossing of the fish back and forth, the Straw Hats finally landed her when Chopper's Guard Point bounced her straight into their bucket.
Rosario is a non-canon character from the sixth One Piece film, Baron Omatsuri and the Secret Island. She is an enormous goldfish kept by the pirate Muchigoro who briefly stands in the Straw Hats' way during one of the island's deadly trials.
Rosario is an oversized red fish protected by a tough metallic shell. Jewels stud the upper portion of that shell as well as a spot on her forehead.
Rosario is kept as a pet by Muchigoro, a member of the Red Arrows Pirates. She appears to have joined the crew after their resurrection, since she lacks the sprout that grows from the heads of the crew's revived members.
During Baron Omatsuri's first Trial of Hell, the Straw Hat Pirates assumed the task was scooping up small goldfish, only to learn they had to capture Rosario away from Muchigoro instead. The crew failed repeatedly, with Luffy even tearing the flimsy net he was handed.
After much tossing of the fish back and forth, and Robin blocking Muchigoro's attempt to net her himself, the Straw Hats finally landed Rosario when Chopper's Guard Point bounced her straight into their bucket.
Looking for more on Rosario? The One Piece Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
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