History:Duke Fishron

Main article: Duke Fishron

• 2.0.4.003:
  • Now always targets the same player until they die.
  • Fixed its map icon disappearing at the wrong times in Revengeance Master Mode.

• 2.0.4.002:
  • Buffed contact damage in Master Mode from 252 to 294 , Sharknado Sharkron's damage from 270 to 315 , and Cthulhunado Sharkron's damage from 315 to 360 . Buffed Sharknado damage from 240 to 300 .
  • No longer deals contact damage in the brief downtime between charges.

• 2.0.4.001:
  • Buffed contact damage from 100 / 140 / 168 / 182 / 210 to 100 / 140 / 168 / 196 / 252 , Detonating Bubble and Sharknado Sharkron's damage from 100 / 150 / 180 / 195 / 225 to 100 / 150 / 180 / 210 / 270 , and Cthulhunado Sharkron's damage from 120 / 180 / 210 / 225 / 270 to 120 / 180 / 210 / 240 / 315 .
  • Buffed Cthulhunado damage from 160 / 200 / 232 / 240 / 348 to 160 / 200 / 232 / 264 / 480 , but nerfed Sharknado damage from 80 / 100 / 184 / 200 / 270 to 80 / 100 / 150 / 200 / 240 .
  • Can now turn the Calamity Boss Health Bar red when enraged, and gray when gaining a temporary defense boost outside of Revengeance Mode.
  • No longer uses a global scaling contact damage formula based on boss velocity.
  • No longer deals contact damage while not charging in all difficulties.
  • No longer becomes invincible during phase transitions outside of Revengeance Mode, and instead gains 62.5% damage reduction.
  • Sharkrons can no longer be homed in on, and are no longer immune to lifesteal.
  • Sharknado and Cthulhunado spawners now break when touching water in Revengeance Mode.
  • Decreased how long Sharknados and Cthulhunados do not deal damage after spawning from 2 seconds to 1, but they now appear translucent before dealing damage.
  • Now charges faster, has a shorter delay between charges, spews Detonating Bubbles faster, spawns sharknados faster, enters phase 2 at 60% health, enters phase 3 at 25% health, Cthulhunado spawners always move at maximum speed, and Cthulhunados and their Sharkrons are larger in Master Mode.
  • Now starts in phase 3 which lasts until 90% health, enters phase 3 at 30% health, starts his final attack pattern at 10% health, Detonating Bubbles are immune to damage, chase for longer, and push away from each other, and spawns Detonating Bubbles during charges in his final attack pattern in Revengeance Master Mode.
  • Now takes 120% damage from The Hive's plague bees.
  • Fixed him not dropping Duke's Decapitator or Fishron Wings in Classic Mode.

• 2.0.2.001: Fixed it being able to drop Fishron Wings twice.

• 2.0.1.003: Now has 99% damage reduction during phase transitions during Boss Rush.

• 2.0.1.002:
  • Nerfed health from 105,625 / 126,750 / 177,450 / 161,604 / 226,248 to 100,000 / 120,000 / 168,000 / 153,000 / 214,200 .
  • Fixed its vulnerability to Resurrection Butterfly applying to Lunatic Cultist instead.

• 1.5.1.003:
  • Buffed health in Revengeance Mode from 152,100 to 177,450 .
  • No longer becomes invulnerable when transitioning between phases, and instead gains 47.5% damage reduction.
  • Now drops 75 .
  • Fixed its health bar functioning incorrectly in Malice Mode.

• 1.5.1.001:
  • Buffed health from 50,000 / 60,000 / 117,000 to 105,625 / 126,750 / 152,100 .
  • Buffed Sharknado damage from 80 / 100 / 116 / 124 to 80 / 100 / 184 / 200 .
  • It and its Sharkrons are now vulnerable to electricity and sickness debuffs, but resistant to water and heat debuffs.
  • Now drops Shrimpy Truffle regardless of world difficulty.

• 1.5.0.001:
  • Buffed Revengeance Mode health from 111,000 to 117,000 .
  • Nerfed Boss Rush health from 2,900,000 / 3,480,000 / 6,438,000 to 290,000 / 348,000 / 643,800 .
  • Nerfed phase 1 defense from 60 to 50.
  • Nerfed phase 2 defense from 50 to 40.
  • Nerfed phase 3 defense in Revengeance Mode from 37 to 0 .
  • Buffed damage reduction from 10% to 15%.
  • Sharkron no longer drops Hearts in Revengeance or Malice Mode.
  • Sharknado sharks can no longer deal damage for the first 42 frames after they've spawned in.

• 1.4.5.004:
  • Now gains new charging patterns as its health decreases during phase 3 in Revengeance Mode.
  • Will also now continuously charge at the player when its health is below 20% in Revengeance Mode.
  • Now transitions to phase 2 at 70% health instead of 66% and phase 3 at 40% instead of 20% / 33% .

• 1.4.5.003: Now has increased attack delay, no longer transitions to phase 2 at the start of the fight, and its map icon is now invisible for the entirety of phase 3 in Death Mode.

• 1.4.5.001: Now takes 135% damage from Resurrection Butterfly instead of 200%.

• 1.4.4.004: Buffed damage reduction in Revengeance Mode from 0% to 10%.

• 1.4.4.002: Now takes 35% more damage from Resurrection Butterfly.

• 1.4.3.001:
  • Nerfed phase 1 contact damage from 100 / 140 / 175 / 201 to 100 / 140 / 161 / 173 .
  • Nerfed phase 2 contact damage from 120 / 201 / 251 / 288 to 120 / 201 / 231 / 249 .
  • Nerfed phase 3 contact damage from 184 / 230 / 264 to 184 / 211 / 228 .
  • Nerfed small Sharkron damage from 100 / 150 / 187 / 215 to 100 / 150 / 172 / 186 .
  • Nerfed large Sharkron damage from 120 / 180 / 225 / 258 to 120 / 180 / 206 / 223 .
  • Nerfed Detonating Bubble damage from 100 / 150 / 187 / 215 to 100 / 150 / 172 / 186 .
  • Nerfed Sharknado damage from 80 / 100 / 125 / 143 to 80 / 100 / 114 / 124 .
  • Nerfed Cthulhunado damage from 160 / 200 / 250 / 287 to 160 / 200 / 229 / 248 .
  • Death Mode now causes it to transition into Phase 2 immediately instead of at 66% health.
  • Increased charge speed and frequency in Death Mode.

• 1.4.2.106: Buffed Boss Rush health from 2,500,000 to 2,900,000.

• 1.4.2.105:
  • Revengeance Mode changes:
    • Nerfed Sharkron health modifier from 30x to 5x .
    • Now spawns a swarm of individual Sharkrons as well as bubbles while spinning.
    • Now spawns 3 Sharknadoes in phase 1 instead of 2. Each time he spawns the Sharknadoes, they appear in a different pattern.
    • Cthulhunados are now larger.
    • Increased speed.
  • Map icon now disappears in phase 3 in Death Mode.
  • Fixed the hitbox of Sharkron.

• 1.4.2.102:
  • Sharknadoes and Cthulhunadoes are now able to hurt the player sooner.
  • Fixed it being able to naturally spawn at the Sulphurous Sea in Death Mode.

• 1.4.2.101:
  • Sharknadoes and Cthulhunadoes now don't hurt the player for a bit upon spawning.
  • Fixed it not spawning in Death Mode.

• 1.4.2.001:
  • Nerfed Boss Rush health from 5,000,000 to 2,500,000.
  • Phase 3 now normally activates below 20% health instead of 33% health, and now activates at 30% health instead of 50% during Boss Rush.
  • Reduced frequency at which Cthulhunadoes are spawned.
  • Sharkrons can no longer be lifestealed off of.
  • Now has a minimum coin drop count of 25 .

• 1.4.1.002: Decreased charge speed in Revengeance Mode.

• 1.4.1.001:
  • Buffed Boss Rush health from 4,400,000 to 5,000,000.
  • Nerfed Boss Rush damage modifier from 3.25x to 2x.
  • Decreased contact damage modifiers.
  • Now spawns further away from the player during Boss Rush.
  • No longer takes 25% damage from Crystal Bullet shards, Holy Arrow stars, split Terra Arrows, and split Terra Bullets.

• 1.4.0.001: Now transitions into phase 3 upon reaching 33% health in Revengeance Mode instead of 20%.

• 1.3.4.101:
  • Buffed health modifier from 1.5x / 3.175x to 1.85x / 3.525x .
  • No longer has 35% damage reduction.

• 1.3.4.001:
  • Nerfed health modifier from 1.9x / 3.2x to 1.5x / 3.175x .
  • Now drops Duke Fishron (lore item).
  • Now takes 25% damage from Crystal Bullet shards, Holy Arrow stars, split Terra Arrows, and split Terra Bullets.

• 1.3.3.001: Now removes the early-Hardmode nerf to enemy health and damage when defeated.

• 1.2.4.101: Buffed Death Mode health modifier from 2.2x to 3.2x .

• 1.2.4.002:
  • Changed health modifier from 1.65x / 2.3x to 1.9x / 2.2x .
  • Sharkrons now gain a 30x health modifier in all modes.

• 1.2.4.001: Now fires Cthulhunadoes in phase 3 in Death Mode.

• 1.2.3.002:
  • Now gains a 2.3x health modifier in Death Mode.
  • Now enters phase 3 upon reaching 50% health in Death Mode.

• 1.2.1.004: Buffed Revengeance Mode health modifier from 1.5x to 1.65x .

• 1.2.0.002:
  • Now inflicts Marked for Death for 3 seconds in Revengeance Mode.
  • Detonating Bubble now inflicts Marked for Death for 6 seconds in Revengeance Mode.
  • Sharkron now inflicts Marked for Death for 3 seconds in Revengeance Mode.

• 1.2.0.001:
  • Now gains a 1.5x health modifier in Revengeance Mode.
  • Increased speed.
  • Now gains extra defense when performing certain attacks.
  • Now has a 2% chance to drop Laudanum or Stress Pills in Revengeance Mode.