The Strongest Fishmen of all time in One Piece – Top 15 Ranked List

Welcome to the captivating world of One Piece, where the seas are teeming with extraordinary individuals, each stronger than the other. And while a dynamic range of races coexist in the “Wan Pisu” universe, Fish-Men are one of the most prolific.

They’re known to be physically stronger than most humans since they’re half-fish, half-human. Fish-Men naturally have a wider range of abilities than us humans. Boring ol’ us, aren’t we?!

Speaking of humans, though, the human One Piece characters aren’t far behind in ridiculous strength, thanks to Devil Fruits. But Fish-Men have a solution – their power multiplies in the water while DF users are reduced to a mere paperweight.

Before we begin, I just wanted to let everyone know I’ve included Merfolk here because why not.

A noteworthy mention goes to Shirahoshi. While her strength as an individual fighter may be limited, her being the literal Ancient Weapon Poseidon makes her a force to be reckoned with in the ocean’s depths.

15. Hack

Hack strongest fishmen in one piece ranked
Hack | Source: Fandom
  • Species – Japanese Soldierfish Fish-Men
  • Affiliation – Revolutionary Army

Hundredth Dan Hack is an expert fighter, working closely with Sabo and Koala from the Revolutionary Army. He’s also close to Jinbe and dreams of a friendship between humans and Fish-Men.

The revolutionary is for his proficiency in Fishman Karate, being an instructor and a level 100 practitioner. It allows him to combat opponents much larger than himself like we see when he is fighting the gladiator during the Mera Mera no Mi battle.

He’s also a Fish-Men Jujutsu martial artist with an iron grip, enhanced by his superhuman strength.

The thing about poor Hack is that he’s often underestimated by the One Piece fandom because of the Colosseum. But if you go and rewatch, he did pretty well for himself before running into Tier 1 characters like Luffy.

14. Hody Jones (OD)

Hody Jones strongest fishmen in one piece ranked
Hody Jones | Source: Fandom
  • Species – Great White Shark Fish-Men
  • Affiliation – New Fishman Pirates

Hody built himself up to be the Arnold 2.0, and given how amazing Arnold’s arc was, we naturally had huge expectations. And boy, did he turn out to be a disappointment.

But that can’t be said for his overdosed form. Despite his character shortcomings, Hody overdosed and went toe-to-toe against Luffy, bypassing even his Conqueror’s Haki.

For those who aren’t aware, Hody Jones was the captain of the now-disbanded New Fishman Pirates and a soldier for the Ryugu Kingdom as part of Neptune’s Army.

Being an ardent supporter of Arlong and his ideals, he despised humans and was ready to kill any of his own species if they showed any love toward a human.

13. Dellinger

Dellinger strongest fishmen in one piece ranked
Dellinger | Source: Fandom
  • Species – Human-Fighting Fish Fishman
  • Affiliation – Donquixote Pirates

In his short time in the Dressrosa arc, Dellinger came across as quite a strong antagonist. He is the combatant and an officer of the Donquixote Pirates‘ Diamante Army, with considerable battle prowess.

When he was 6, he assisted in the siege of Dressrosa, which undoubtedly shaped him and his confidence.

His fighter-fish fangs, sharp horns, and superhuman kicks are enough to defeat a super-weighed dude like Machvise.

More than anything, Dellinger’s extraordinary speed creates afterimages and can effortlessly dodge various attacks. He’s a beast among beasts.

12. Fukaboshi

Fukaboshi strongest fishmen in one piece ranked
Fukaboshi | Source: IMDB
  • Species – Shark Merman
  • Affiliation – Ryugu Kingdom

Fukaboshi is the eldest son of King Neptune and is next in line to the throne. He’s the strongest soldier in the Neptune Army alongside his brothers, Ryuboshi and Manboshi, and of course, his sister, the Ancient Weapon, Shirahoshi.

He’s naturally strong and defeats a huge Hammerhead Shark Fishman from the New Fish-Men Pirates. Despite being injured, the endurant, Fukaboshi, aids Luffy in the battle against Hody.

He carries a trident and is adept at the Merfolk fighting style, Merman Gujutsu/Combat, with which he fights Hody’s drug-enhanced sea monsters.

11. Aladine

Aladine strongest fishmen in one piece ranked
Aladine | Source: Fandom
  • Species – Goatsbeard Brotula Merman
  • Affiliation – Sun Pirates

Aladine is half-Merman, half-Fish-Men, which gives him an added advantage over other marine subspecies. He became the pirate doctor and first commander of the Sun Pirates and is likely its current captain after Jinbe resigned.

Besides his vast medical skills, Aladine is well-versed in not just Fish-Men Karate but also Fishman Jujutsu, which he uses to prevent the Thousand Sunny from sinking.

While he may not have a lot of feats of his own, the fact that he ran Sun Pirates in Jinbe’s absence shows his strength and authority among the Fish-Men.

10. Sunbell

Sunbell strongest fishmen in one piece ranked
Sunbell | Source: Fandom
  • Species – Unknown (Possibly a Mermaid or Fish-Men hybrid)
  • Affiliation – Roger Pirates

Sunbell was a crew member led by the legendary Pirate King, Gol D. Roger. Despite limited information, Sunbell is known for two key feats:

  • He fought against a young Vista, who would later become the 5th Division Commander of the Whitebeard Pirates.
  • As a Pirate King’s crew member, Sunbell played a vital role in the extraordinary adventures and journeys undertaken by the Roger Pirates.

Though much remains unknown about Sunbell’s species and specific abilities, their association with the Roger Pirates solidifies their status as significant individuals among the marine subspecies of One Piece.

9. Wadatsumi

Wadatsumi strongest fishmen in one piece ranked
Wadatsumi | Source: Fandom
  • Species – Giant Fish-Men
  • Affiliation – New Fish-Men Pirates

Wadatsumi, a towering figure among the Fish-Men, makes his presence known. As a Giant Fish-Men, his sheer size and strength are awe-inspiring. Towering over his adversaries, Wadatsumi possesses incredible physical power and durability.

While initially introduced as a subordinate of Hody Jones, his character arc takes an interesting turn when he aligns himself with the Straw Hat Pirates.

Wadatsumi may not have the flashiest movie, but this 262′ feet tall giant may even give Oars a run for his money.

In combat, he relies on his massive size and strength to deliver devastating blows to his opponents. Additionally, his gigantic form gives him a formidable defense, making him difficult to defeat.

8. Karma

Karma strongest fishmen in one piece ranked
Karma | Source: Fandom
  • Species – Octopus Fish-Men
  • Affiliation – Takotopus Pirates

Karma is the captain of the Takotopus Pirates, an infamous pirate crew under the banner of Whitebeard Pirates. With his unique aquatic lineage, Karma possesses formidable abilities that set him apart from other Fish-Men.

As an octopus Fish-Men, Karma can use a six-sword style similar to Hachi from the Arlond arc. His flexible limbs and mastery over manipulating his appendages make him an elusive and adaptable combatant.

From what I recall, Karma’s greatest feat came from anime when he clashed swords against a wounded Kozuki Oden. I’d like to see others on this list try that baller move.

While specific encounters or battles may not have been prominently showcased in the series, Karma’s affiliation with the Whitebeard Pirates speaks volumes about his strength and reputation. To earn a place among the ranks of such an esteemed crew is a testament to his capabilities as a pirate captain.

7. King Neptune

King Neptune strongest fishmen in one piece ranked
King Neptune | Source: Fandom
  • Species – Coelacanth Merman
  • Affiliation – Ryugu Kingdom

King Neptune is the king and patriarch of the Ryugu Kingdom, father of Shirahoshi, the Ancient Weapon.

Neptune has authority over the entire kingdom on Fish-Men Island and commands the other Merman officials and the army. He’s extremely strong, but his age has made him weaker.

It’s been noted in the One Piece lore that Neptune, in his prime, would’ve been stronger than even Jinbe. Even in his old age, his durability is amazing.

Neptune was able to withstand Hody Jones on steroids, and that’s a giant feat of its own. He also carries a massive trident and can perform Merman Combat with him.

He can manipulate water and launch projectiles with it like a solid substance. King Neptune can also communicate with whales and call them if needed.

6. Sasaki

Sasaki strongest fishmen in one piece ranked
Sasaki | Source: Fandom
  • Species Bluespine Unicornfish Fish-Men
  • Affiliation Beasts Pirates

Sasaki, known as “Overflowing” Sasaki, is a fearsome member of the Beasts Pirates and one of the Tobiroppo, the six strongest Shinuchi in the crew. He also holds the position of leading the Armored Division within the Beasts Pirates.

He consumed the Ryu Ryu no Mi, Model: Triceratops, an Ancient Zoan-type Devil Fruit that allows him to transform into a triceratops at will. In his transformed state, Sasaki gains immense physical strength, allowing him to charge at opponents with incredible force.

Additionally, Sasaki is a skilled swordsman, wielding a special mechanized sword called the Karakuri Rasento. This sword possesses a rotational mechanism that allows the blade to spin at high speeds, akin to a portable drill.

5. Namur

Namur strongest fishmen in one piece ranked
Namur | Source: Fandom
  • Species – Shark Fishman
  • Affiliation – Whitebeard Pirates

As soon as you read the phrase Whitebeard Pirates, you think strongly. Being the 8th division commander for Edward Newgate, Namur lives up to the expectation.

We saw Namur fighting alongside his crew and Luffy during the Summit War of Marineford, and later under Marco’s captaincy, against the Blackbeard Pirates.

Namur can bite through an iron axe with his teeth, and being a Fishman, he is 20 times stronger than a human underwater.

Being a Yonko commander and the only non-human division commander in Whitebeard’s crew, he’s probably well-versed in Fish-Men Karate and other forms of combat.

4. Kawamatsu

Kawamatsu strongest fishmen in one piece ranked
Kawamatsu the Kappa | Source: IMDB
  • Species – Japanese Puffer Fishman
  • Affiliation – Nine Red Scabbards

Kawamatsu is the strongest non-pirate Fish-Men in the series, selected to be one of Oden’s retainers and guardian to Oden’s daughter, Hiyori. He’s a precise marksman, a fast swimmer, and an endurant fighter.

Kinemon says that Kawamatsu, Denjiro, and Ashura Doji are worth 100 people in battle.

Being an extremely capable samurai, his swordsmanship is masterful – he even made his own style, Kappa Ryu, incorporating his sumo skills and Fishman strength into the blade.

Kawamatsu is also a skilled Armament Haki or Ryuo user, fighting several Beasts Pirates without contact. He landed blows on Kaido himself and pushed him off his feet with the help of the other Scabbards.

3. Jack

Jack strongest fishmen in one piece ranked
Jack the Drought | Source: Fandom
  • Species – Giant Grouper Fishman
  • Affiliation – Beasts Pirates

Jack the Drought is one of Yonko Kaido’s Lead Performers. His Ancient Zoan Devil Fruits lets him transform into a full or hybrid mammoth, boosting his already significant power and endurance.

This gives him an edge over other Fishmen but also a disability – he cannot swim. Still, he has gills, so he could survive as he did after being hit and flung into the ocean by Zunesha’s trunk.

Jack was our introduction to the Beasts Pirates in the story – a mini Kaido. And he was a POWERHOUSE! He sunk 2 Marine battleships that carried the former fleet admiral Sengoku, admiral Fujitora, and vice-admirals Tsuru, Bastille, and Maynard. Though he was defeated, he escaped with minor injuries.

He fought the strongest Minks, Inuarshi, and Nekomamushi for 5 days and 5 nights without a break; it took 2 of them to defeat him in their Sulong forms.

2. Fisher Tiger

Fisher Tiger strongest fishmen in one piece ranked
Fisher Tiger | Source: IMDB
  • Species – Sea Bream Fishman
  • Affiliation – Sun Pirates

Disclaimer: Fisher was #4 in my original list, behind Kawamatsu and Jack. But the recent chapters have shown me the type of security saints has in Mariejois, making Fisher Tiger’s feats all the more amazing.

Next is the Fishman legend, Fisher Tiger himself. Founder and captain of the Sun Pirates, Fisher Tiger is a hero to his people, freeing the ones taken as slaves by the Nobles. He reached the Grand Line and wreaked havoc across Mary Geoise.

Apart from his leadership and obvious charisma, Fisher Tiger’s strengths were his raw power. He kicked a Marine rear admiral called Kadar, defeating him instantly.

In an injured state, he could fight an attacking Marine with such speed that they didn’t even have time to react. Tiger also sported a huge pistol, a saber, 2 swords, and an actual bazooka during battle.

1. Jinbe

jinbe strongest fishmen in one piece ranked
Jinbe “First Son the Sea” | Source: IMDB
  • Species – Whale Shark Fishman
  • Affiliation – Straw Hat Pirates

Jinbe, the Knight of the Sea, is the strongest Fishman of all time in One Piece. Thanks to mastery over Fishman Karate, he’s unbeatable underwater. He’s more versatile than Jack, fought Ace evenly on land for 5 days, punched Big Mom, and tanked Akainu’s Magma Punch.

It’s still unclear who would win in a 1v1 between Jack and Jinbe due to a lack of evidence. But you know what they say, “If it’s 1v1, always bet against Jack!”

Jinbei’s the former Sun Pirates captain, Warlord of the Sea, Big Mom crewmate, and Straw Hat helmsman. He can read sea currents like a language and navigate the most tumultuous seas.

He can communicate with marine life, and this helps him summon whale sharks to get him out of Impel Down. Jinbei’s Fishman Karate is notably the strongest we’ve ever seen. He knocked out Charlotte Opera, defeated an Awakened Zoan Jailer Beast, blocked Gecko Moria with his DF power, and deflected Hody on steroids.