Duke Fishron

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Duke FishronFirst Form
Duke Fishron.png
AI TypeDuke Fishron AI
Damage100 / 140 (melee)
90 / 100 (Sharknado)
100 / 140 (detonating bubble)
Max Life50000 / 60000
Defense50 (100 when enraged)
KB Resist100%
Immune toPoisonedOn Fire!ConfusedFrostburnVenomStunned
Inflicts debuffs
Debuff tooltipCannot regenerate life
Duration6 - 20 seconds
DebuffFeral BiteFeral BiteDesktop VersionConsole VersionMobile Version
Debuff tooltipIncreased damage, Decreased life regen, Causes status effects
Duration3 - 10 seconds
Coins10000*1 Gold Coin.png
Map Icon Duke Fishron.png
Map Icon
Duke FishronSecond Form
AI TypeDuke Fishron AI
Damage150 / 201 (melee)
160 / 200 (Cthulhunado)
Max Life25000/50000 / 30000/60000
Defense40 (80 when enraged)
KB Resist100%
Immune toPoisonedVenomOn Fire!ConfusedFrostburnStunned
Inflicts debuffs
Debuff tooltipCannot regenerate life
Duration3 - 10 seconds /
6 - 20 seconds
DebuffFeral BiteFeral BiteDesktop VersionConsole VersionMobile Version
Debuff tooltipIncreased damage, Decreased life regen, Causes status effects
Duration3 - 10 seconds
Coins10000*1 Gold Coin.png 1000*10 Silver Coin.png
Map Icon Duke Fishron.png
Map Icon

Duke Fishron Trophy.png"The mutant terror of the sea..."Duke Fishron Trophy.png

This article is about the Hardmode boss. For the quest fish, see Fishron. For the aquatic mount, see Cute Fishron.

Duke Fishron is a Hardmode boss. While he can be summoned as soon as Hardmode is initiated, he is significantly more difficult than most Hardmode bosses and will generally require post-Golem gear. Fighting Duke Fishron is completely optional and not required for game progression, however, his defeat will reward the player with powerful weapons.

On the Old-gen console version Old-gen console version and 3DS version 3DS version, Duke Fishron and Ocram are the final bosses due to the lack of the Moon Lord in these versions.

While Duke Fishron is alive, music Boss 1 will play.

Summoning[edit | edit source]

Duke Fishron is summoned by fishing in the Ocean, using a Truffle Worm as bait. The Truffle Worm is a rare critter that must be caught with the Bug Net or Golden Bug Net in an Underground Glowing Mushroom biome. Once the bobber bobs, reeling in the line spawns Duke Fishron, who emerges from the water, pauses for a moment, and then begins attacking the player.

Summoning Duke Fishron does not require that any other bosses have been defeated beforehand. However, a world must be in Hardmode to obtain the Truffle Worm used to summon him. He can, however, be summoned in a pre-Hardmode world by bringing a Truffle Worm from a Hardmode world. The player's Fishing Power is irrelevant to the summoning, and of course Crate or Sonar potions will be wasted.

Attacks[edit | edit source]

Debuffs[edit | edit source]

When hitting the player, Duke Fishron has a 33% chance to inflict Bleeding, in Expert Mode a 33% chance to inflict Feral Bite, and otherwise does not inflict anything. Feral Bite is expert-mode exclusive; Bleeding is not, but can be ignored with an Adhesive Bandage, or more likely the Ankh Shield.

First stage[edit | edit source]

Duke Fishron lunges at the player exactly five times, traveling through blocks, before using one of two projectile attacks:

  • Detonating BubbleDetonating Bubble: Duke Fishron blows roughly 10-20 bubbles from his mouth that follow the player at moderate speed, exploding and dealing damage on contact. The bubbles can be destroyed by any attack or projectile. These inflict the Wet debuff for 3-8 seconds. Duke Fishron will either move to the top left or top right of the player's location before starting the attack. The Sharkron attack has the opposite direction of this attack, but it changes each time Duke Fishron is summoned.
  • SharkronSharkron: Duke Fishron waves his fins, summoning liquid blobs that fall (bypassing any platforms) until they travel 1.5x the vertical size of the screen or impact with blocks. They then spawn Sharknadoes: giant water tornadoes which each fire several Sharkrons. Sharkrons have limited flight range, are destroyed on impact with blocks, and can be killed by the player.

Second stage[edit | edit source]

When Duke Fishron falls below half health (25000 / 30000), he remains stationary for a second and transforms, being a good time to deal damage and/or consume Potions. His skin becomes a darker green and his eyes will start glowing. His damage and speed increase significantly, but his defense is reduced to 40. His lunges become faster, and are only performed three times instead of five before executing one of his projectile attacks, which are also upgraded:

  • Detonating Bubbles are now fired while Duke Fishron flies in quick loops, which leave a trail of the bubbles behind. This attack will start in the same location relative to the player as the first stage detonating bubble.
  • There is now only one "blob" that causes a tornado, but it follows the player, creating a Cthulhunado on contact. Cthulhunadoes are significantly bigger than Sharknadoes and will spawn twice as many Sharkrons.

Third stage[edit | edit source]

Expert Mode-Only Content: This information applies only to Expert mode and Expert mode worlds.

When Duke Fishron falls below 9,000 health, he will stop moving to transform again, and the background will be covered in a dark, blue fog. Duke Fishron will become invisible, but his eyes still glow. His damage will be reduced to 184, and he will only attack by charging at the player, but he gains the ability to teleport behind them before doing so. His charges will come in a set pattern:

  • First, he will charge once before teleporting;
  • Then, he will charge twice, and teleport behind the player again;
  • Finally, he will charge three times, and the pattern will reset.

After being defeated, the background will return to normal, and his Treasure Bag will be dropped.

Notes[edit | edit source]

  • Desktop VersionConsole VersionMobile Version Straying too far from the Ocean area (more than 400 tiles from the (unreachable) lateral edge of the world) during the fight causes Duke Fishron to "enrage", lunging at the player continuously, dealing double damage, and gaining double defense (similar to Plantera's "enraged" behavior outside the Underground Jungle). However, Duke Fishron will not enrage whatsoever on Old-gen console version Old-gen console. Note that altitude also matters: If the player is below surface level, or within 50 tiles from the top of the map (due to part of the map being unreachable, this distance is around 13 tiles in-game), Duke Fishron will enrage. Also, note that Duke Fishron will not despawn because of the biome or time of day.
  • The following conditions regarding outer circumstances need to be met for being able to summon him:
    • The player is within 380 tiles from the (unreachable) world's edge.
    • The bobber is in a pool of water or lava which is larger than 1000 tiles (following the usual lake size rules) or in a pool of honey which is larger than 668 tiles.
    • Duke Fishron must NOT be alive anywhere in the world.
      • It is possible for Multiple Duke Fishrons to be alive at the same time, however, if the player manages to throw multiple hooks by throwing out an item from the inventory while the bobber is still in the water, which will not cause it to be retracted but instead, the player will cast additional Fishing Lines and will not cause the previous ones to disappear. This will require additional Truffle Worms, which are consumed accordingly.

Achievements[edit | edit source]

Achievement Fish Out of Water.png
Fish Out of Water • "Defeat Duke Fishron, mutant terror of the sea."
Defeat Duke Fishron for the first time. Desktop VersionConsole VersionMobile Version

Tips[edit | edit source]

For more elaborate strategies on defeating Duke Fishron, including weapon and arena recommendations, see Guide:Duke Fishron strategies.

  • Desktop VersionConsole VersionMobile Version Keep in mind your current distance from the Ocean that the boss was spawned at, to prevent him from becoming enraged and making the fight unnecessarily more difficult.
  • The Inferno Potion can come in very handy during this fight to prevent taking any damage from Duke's homing bubble attacks. Since they are destroyed when damaged, the Inferno Potion's ring of fire will block them off completely.
    • On the other hand, The Horseman's Blade can destroy the bubbles and spawn a pumpkin for each one. With how many of them spawn it can put a large dent in Duke Fishron's health.
  • Players can build a platform along the top of the Ocean to avoid sinking. Water Walking Boots and Water Walking Potions are also good for defeating Duke Fishron and not sinking.
  • 3DS Version He is the only boss that is immune to the Stunned debuff, making Heart Arrows useless against him.
  • As Cthulhunadoes might be hard to see during nighttime, it is recommended to fight Duke Fishron during the day or use visual aids like the Shine Potion and Hunter Potion.
  • Using an Anti-Gravity HookDesktop VersionConsole VersionMobile Version on a block and continuously going in circles can successfully allow dodging every attack and dash from the boss.
  • On Expert modeDesktop VersionConsole VersionMobile Version, the Shield of Cthulhu can be used to great effect, providing brief invincibility frames when dashing into him.
  • Using a combination of the Tactical Shotgun, Chlorophyte Bullets, and any wings will make the fight very easy.

Trivia[edit | edit source]

  • Duke Fishron was originally part of an April Fools joke by Terraria staff that claimed an "Aquarian Horde" event was to be included in the game. The Duke Fishron element alone ended up being introduced.
  • In the Wii U Wii U edition, the second phase's eyes will only glow when transforming and summoning Cthulhunadoes.
  • Duke Fishron resembles a mutant creature in the second episode in the fourth season of the American animated science fiction sitcom Futurama, Leela's Homeworld.
  • The Sharknado attack is an allusion to the 2013 American made-for-television sci-fi disaster film Sharknado.
  • Duke Fishron turns transparent when over blocks, much the same way that Pigrons do.
  • The Treasure Bag's image more resembles an actual pig, as it lacks the Fangs that Duke Fishron has.
  • Duke Fishron drops an absurdly low amount of coins compared to other Hardmode bosses, despite being one of the toughest to defeat.
  • Duke Fishron's weapon drops have considerably low reforge costs compared to other weaponry acquired around the same time.
  • Duke Fishron (and by extension, the Cute Fishron) appears to be a combination of a shark, a pig, and a dragon. Cenx confirmed that the Pigron was a cross between the latter two creatures, which further proves this theory.
  • The Cthulhunado could be a reference to Cthulhu's avatar the "Father of All Sharks".[1]
  • While fishing with a Truffle Worm and a Sonar Potion, it shows as a normal catch, however reeling the line in still summons Duke Fishron.
  • Duke Fishron is the only boss with three distinct stages, one being Expert-mode exclusive.

Footnotes[edit | edit source]

  1. Cthulhu Mythos deities on Wikipedia (see Raandaii-B'nk section)

History[edit | edit source]

  • Desktop
    • Now drops Treasure Bag in Expert mode.
    • A third stage and attack type is also implemented when fighting him in Expert mode.
    • Now becomes enraged when leaving the ocean.
    • Given a new death sprite.