One of the most mobile bosses in Terraria and a nightmare to face when unprepared is Duke Fishron. This shark/pig/dragon abomination is quick to move and has high HP to boot. His health ranges from 50,000; 60,000; and 76,500 depending on which difficulty your world is set to. He flies in erratic patterns and attacks with sharknados, explosive bubbles, and a ghostly charge attack. Duke Fishron offers some of the best equipment pre-Moon Lord and is recommended to tackle after Golem or Plantera. This guide will show you how to summon Duke Fishron, his behavior, and what drops you can expect to find from him in Terraria.
You can summon Duke Fishron by first catching a truffle worm from glowing mushroom biomes underground. Truffle worms are wily and will attempt to escape the player once you get close so close the distance quickly while swinging a bug net to capture this elusive worm.
Fishing in an ocean with one of these worms in your inventory will spawn the boss after you reel in a catch. Once you get him low enough his skin will turn darker and his eyes will glow yellow. He will disappear and reappear to quickly charge at the player. Attempt this boss fight only if you are confident in quick repositions and can deal decent damage.
Since Duke Fishron’s summon item is not craftable, you will need to spend quite a bit of time in underground mushroom biomes to get many chances to fight him. Keep an eye on your lifeform analyzer to know when a truffle worm has spawned. Since the truffle worm will run away and eventually disappear, try to shape the environment so that you can approach the worm easily.
If you are playing on expert or higher, this boss fight has three stages. The first stage he will attempt to charge at the player, spit explosive bubbles, or summon sharknados to deal damage to you. In the second stage, he will quickly fly around in circles, and in the third stage, he will become invisible, teleport around the player, and charge at you aggressively.
This fight is dangerous and requires a good deal of preparation. Duke Fishron has 50000, 60000, or 76500 health depending on your world’s difficulty. If you are playing on expert or higher, his attacks have a 33% chance to inflict bleeding and feral bite.
He will enter his second stage upon falling below 50% of his maximum health. He will remain stationary for a second and transform. All of his attacks and speed will increase significantly, but you will be able to deal more damage. The tornado he summons will also be larger, and spawn twice as many shark projectiles.
Finally, upon reaching below 15% health (expert and master difficulty only) he will transform again. Most of him will be invisible, but you can still see his glowing eyes. You can expect him to deal less damage and take full damage at this point, but he gains the ability to teleport. In this stage, he will only charge aggressively at the player.
Duke Fishron is no easy fight, especially after first entering hardmode, but once you have decent weapons and armor, Duke Fishron can be challenged at any point after entering hardmode. The reward is having a small chance to receive one of the best wings in the game pre-Moon Lord. Fishron wings offer you 3 seconds of flight time, 143 total blocks in height, 33 horizontal movement speed, and an upwards acceleration of 245%.
Fishron wings cannot be crafted and can only be obtained by defeating Duke Fishron. The worst part is, the wings are not guaranteed and you will most likely have to defeat him multiple times to obtain these wings. It is not recommended to attempt to beat him without solid mid hardmode gear, but if you manage to do so, these wings will carry you all the way to Moon Lord.
He also drops a weapon for each class available in Terraria. Each weapon has a 20% chance of dropping. Melee classes get to enjoy the Flairon, a ball and chain weapon that gradually fires out bubbles that home in on enemies. You can use this as a crowd control weapon as the flail itself operates as a normal ball and chain, but the added projectiles help you keep your damage output high.
Mages can get two potential rewards from this fight. You can obtain the Bubble Gun or the Razorblade Typhoon as a reward from Duke Fishron. The Bubble Gun is a low cost, rapid fire magic weapon that will shoot in a small spread. Similar to the spread of a shotgun, this can be a go-to weapon for enemies that like to spend time in front of you. The Razorblade Typhoon will launch a large disc that bounces between walls and pierces multiple enemies. Consider it an upgrade to the Waterbolt in just about every way. It will also circle around enemies after it is cast, making it a very easy weapon to utilize.
Summoners will get to use the Tempest Staff, which summons little tornados that shoot sharks at your enemies. Like Duke Fishron’s sharknado attack, you can use the Tempest Staff to summon sharknados of your own. Just like every other minion, you can change the color of your minions by checking your equipment tab and changing the dye. The tornados will also deal contact damage, in addition to its ranged attack, however, it does not attempt to make regular contact with enemies.
Finally, the rangers will get to enjoy the Tsunami bow. If you need a strong but straightforward bow, the Tsunami will fire 5 closely grouped arrows of your choice at wherever you aim. While it shoots 5 arrows at a time, it will only consume 1. Use this bow in conjunction with powerful arrows to increase your damage per second.
In a Nutshell
That’s just about everything concerning Duke Fishron in Terraria. He is a difficult boss with a decent array of attacks that each hit harder and faster the longer the fight goes on. Try your best to keep up with him and build a sufficient arena around the ocean to ensure you have enough room to maneuver. Since his fight is relatively difficult, try to fight him after facing Plantera to ensure you have the best options for the fight.
Duke Fishron is considered a post-Plantera, pre-Golem fight. While you can fight him at any stage of the game once the world has reached hardmode, you can consider fighting him whenever you find a truffle worm. Be confident in your movement and practice against him before making a decision. If it turns out he is too difficult, consider if you need more movement capabilities or if you need more damage to finish him off.
Duke Fishron can only be spawned near or in an ocean biome. You will need to cast your fishing rod out with a truffle worm in your inventory. To prevent fishing with bait and catching regular fish, try to keep your inventory free of bait other than the truffle worm itself. This will ensure you do not buff too early and you begin the fight when you expect to.
Quite frankly, Duke Fishron is a difficult boss that is typically fought close to the endgame of hardmode. Also consider what difficulty your world is on, expert and master level bosses leave very little room for error. Common mistakes made by players while fighting fishron would include fighting him too far away from an ocean biome. This will cause Duke Fishron to become enraged and deal double damage. Check to make sure that you have a full armor set on instead of a vanity piece. Players will often utilize their armor slots as an extra inventory slot, ensuring you have your full set of armor on will make the fight bearable. Finally, consider what buffs you are bringing into the fight, ironskin potions and endurance potions will extend your longevity in the fight, making it less costly to make a mistake.
Congratulations, you now know the spawning, behavior, and drops of a difficult boss fight in Terraria. While Duke Fishron is a relatively end-game boss fight and you ought to have a handle on the mechanics of Terraria at this point, his optional existence can tempt you to fight him much earlier. If you do have a solid grasp over the mechanics of Terraria and feel confident with your damage output, consider fighting Duke Fishron early hardmode to get some direction and ease with other bosses while you are progressing. Terraria is a sandbox game, meant to be played and progressed at your leisure.