Duke Fishron

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Duke Fishron First Form
Type Boss
AI Type Duke Fishron AI
Damage Melee
100 / 140
90 / 100
Max Life 50000 / 60000
Defense 50
KB Resist 100%
Inflicts debuff
Bleeding.png Bleeding
33% chance
Debuff duration 3 - 10 seconds / 6 - 20 seconds
Debuff tooltip Cannot regenerate life
Inflicts debuff
Feral Bite.png Feral Bite
33% chance
Debuff duration 3 - 10 seconds
Debuff tooltip Increased damage, Decreased life regen, Causes status effects
Immune to: Poisoned.png Venom.png On Fire!.png Confused.png Frostburn.pngStunned.png
Internal NPC ID: 370
Duke Fishron Second Form
Type Boss
AI Type Duke Fishron AI
Damage Melee
150 / 201
160 / 200
Max Life 25000/50000
Defense 40
KB Resist 100%
Inflicts debuff
Bleeding.png Bleeding
33% chance
Debuff duration 3 - 10 seconds / 6 - 20 seconds
Debuff tooltip Cannot regenerate life
Inflicts debuff
Feral Bite.png Feral Bite
33% chance
Debuff duration 3 - 10 seconds
Debuff tooltip Increased damage, Decreased life regen, Causes status effects
Immune to: Poisoned.png Venom.png On Fire!.png Confused.png Frostburn.pngStunned.png
Coins 1 Gold Coin 10 Silver Coin
Item (Quantity) Rate
Fishron Wings.png Fishron Wings
Bubble Gun.png Bubble Gun
Flairon.png Flairon
Razorblade Typhoon.png Razorblade Typhoon
Tempest Staff.png Tempest Staff
Tsunami.png Tsunami
Greater Healing Potion.png Greater Healing Potion
• 5-15
Duke Fishron Mask.png Duke Fishron Mask
Duke Fishron Trophy.png Duke Fishron Trophy
Treasure Bag (Duke Fishron).png Treasure Bag (Duke Fishron)
• in Expert Mode only Desktop only.png

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

For the quest fish, see Fishron. For the aquatic mount, see Cute Fishron.

Duke Fishron is a Hardmode boss. He is immune to the On Fire!, Poisoned, Venom, Confused, Frostburn, and Mobile only.png3DS logo.svg Stunned debuffs.

Duke Fishron will always drop exactly one of his five weapons at a 20% drop chance for each. The Fishron Wings, Mask, and Trophy are each dropped independently.

Summoning[edit | edit source]

Duke Fishron is summoned by fishing with a Fishing Pole using Truffle Worms as bait in the Ocean. The Truffle Worm is a rare critter that must be caught with the Bug Net or Golden Bug Net in an Underground Mushroom Biome (in the Mobile only.pngMobile version, it will also spawn in a surface Mushroom Biome). Once the bobber bobs, reeling the line in spawns Duke Fishron, who emerges from the water, pauses for a moment, and then lunges at the player.

Summoning Duke Fishron does not require that any other bosses have been defeated beforehand. However, a world must be in Hardmode in order to obtain the Truffle Worm used to summon him. You can summon Duke Fishron in a pre-hardmode world via getting a Truffle Worm in a Hardmode world.

Attacks[edit | edit source]

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 Bubble: This is usually the first attack Duke Fishron uses against the player. Duke Fishron blows roughly 10-20 bubbles from his mouth that follow the player at moderate speed, exploding and dealing damage on contact. These bubbles can be destroyed via any attack or projectile, however, they can be hard to hit. These inflict the "Wet" debuff for 7 seconds.
  • Sharkron: 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 that 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 (25,000 in normal mode, 30,000 in Expert mode) health, he remains stationary for a second and his eyes glow. 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.
  • There is now only one "blob" that causes a tornado, but it follows the player, creating a "Cthulhunado" (upgraded version of first stage's "Sharknado") on contact. The blob itself does not cause damage but will spawn twice as many Sharkrons as in the first stage. ( Wii U edition eyes glow only when switching and are a brighter shade.)

Third stage[edit | edit source]

Treasure Bag.gif Expert Mode-Only Content: This information (or parts of it) applies only to Expert mode and Expert mode worlds.

When Duke Fishron falls below around 8500 health, there will be a little pause and then the sky will transition from normal to be shrouded with a thick, blue fog. Everything, including Duke Fishron, becomes less visible within the fog but still can be located using the minimap, or his small, glowing yellow eyes. While the fog is active, Duke Fishron reaches maximum speed and begins to teleport and dash in order to ram the player.

  • His damage is reduced to 184.
  • He becomes invisible and then teleports to the other side of your screen, then becomes visible again, dashing very quickly at the player in front of and slightly above the player, making running away impossible.
  • After each dash, there is a small pause.

Achievement[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 only.png

Notes[edit | edit source]

  • Straying too far from the Ocean biome 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). Note that altitude does not matter, as long as the player remains far enough east or west.
  • Duke Fishron can also be summoned from a lava pool near the edge of the world with the Hotline Fishing Hook.

Tips[edit | edit source]

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

  • The Paladin's Hammer is highly recommended for defeating Duke Fishron, along with a bridge made with platforms.
  • The Rainbow Gun is great for making a "barrier" against Duke's homing bubbles.
  • The Razorpine is a useful weapon to fight Duke Fishron because of its high firing rate.
  • The Possessed Hatchet can also be a good weapon to use in defeating Duke Fishron.
  • The Tactical Shotgun with Chlorophyte Bullets can be effective as they provide high damage per second.
  • The Influx Waver can be effective (with a good modifier) due to the ability to hit twice.
  • Keep in mind your current distance from the Ocean that the boss was spawned at, so as to prevent him from becoming enraged and making the fight unnecessarily more difficult.
  • Using the Laser Machine Gun with a Mana Flower equipped along with plenty of Mana Potions, and a UFO Mount for movement makes Duke Fishron easier to defeat.
  • Ichor Arrows with the Chlorophyte Shotbow lowers his defense while not compromising base DPS.
  • Vampire Knives with the Godly Modifier provide more damage and better healing that passes well into the second phase.
  • The Inferno Potion can come in very handy during this fight to prevent taking any damage from Duke's homing bubble attacks. Since they only have 1 HP, and the inferno potion has a barrier around the player, it can easily destroy the bubbles if they get too close.
    • 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.
  • Duke Fishron's debuffs stack in terms of chance- that is, it has a 33% to inflict Bleeding, a 33% chance to inflict Feral Bite, and a final 33% chance to inflict nothing.
  • Using Duke Fishron's wings, the Flairon, Tempest Staff and a bridge of platforms can kill him very quickly, if you have already defeated him.
  • The Electrosphere Launcher can do constant damage and keep most of his Detonating Bubbles and Sharkrons from getting near the player allowing them to focus on dodging Duke Fishron.

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 actually being introduced.
  • The Sharknado attack is an allusion to the 2013 movie Sharknado.
  • Duke Fishron turns transparent when over blocks, much the same way that Pigrons do.
  • Duke Fishron drops an absurdly low amount of coins compared to other Hardmode bosses, despite being one of the toughest to defeat.

History[edit | edit source]

  • 1.3.1: Highly increased "run away" distance.
  • Console 1.07 Holiday Update: Console added Duke Fishron and all its drops (minus the Treasure Bag).
    • 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.
  • 1.2.4: Introduced.
Characters: Blue Slime.png Pre-Hardmode Enemies • Pixie.png Hardmode Enemies • Goblin Warrior.png Event Enemies • Skeletron Head.png Bosses
Bunny.png Critters • Guide.png Friendly NPCs • Baby Dinosaur.png Familiars