As an arowana fish-man, Tansui has a very wide build. He has very pale pink skin and a large lower jaw. He has scales on the back of his head. He wears necklaces, a green fur cloak, a pair of swim briefs, and belt, which has written the word "Alowana" on it. During his time as a Sun Pirate, he wore a vertically striped cloak.
His talk is very open-minded, to the ire of Macro, and even to Duval himself. Unlike most other fish-men seen in the series, Tansui and the other Macro Pirates have no qualms selling other fish-men and merfolk to slavery.
Abilities and Powers
As a fish-man, Tansui is ten times stronger than a human and twice that underwater. He can be considered rather weak as Hatchan defeated him as well as the other two Macro pirates easily.
He is apparently able to use Fish-Man Karate; although his skills are never seen as he is beaten before he can use them.
During his time with the Sun Pirates, Tansui wielded a dagger.
Tansui was among the fish-men who joined the Sun Pirates and repeatedly attacked the Marines. One day a former humanslave named Koala boarded their ship to return to her home in Foolshout Island. During her time with the Sun Pirates, Tansui, Gyaro, and Macro got attached to the girl. When she finally returned to her home, the three fish-men emotionally cried during her farewell. After Koala returned to her family, the Sun Pirates were ambushed by the Marines. The fish-men lost their ship and Tiger was badly wounded during the battle. They managed to commandeer a Marine ship, but Tiger soon died from his injuries.
Several years later, the Macro Pirates reunited with Hatchan and gave him a treasure map in exchange for Camie. However, due to Hatchan thinking the map was a fake, he returned to trash the crew's ship and rescue Camie, resulting in the crew holding a grudge against the octopus fish-man.
Summit War Saga
Sabaody Archipelago Arc
Working with Duval and the Flying Fish Riders, Tansui and his crew managed to capture Hatchan in order to lure Camie and the Straw Hat Pirates into the Flying Fish Riders' base. When Camie and Pappag dove into the water, the Macro Pirates were waiting and caught them, but Monkey D. Luffy easily stole them back. After Roronoa Zoro freed Hatchan, the octopus fish-man sent the Macro Pirates flying with one punch each.