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Damage5 / 10 Expert Mode / 15 Master Mode
Max Life7200 / 14400 Expert Mode / 21600 Master Mode
KB Resist10% / 19% Expert Mode / 28% Master Mode
Inflicts debuffCrush DepthCrush Depth
100% chance

Debuff duration5 seconds
Debuff tooltipCrushed by aquatic pressure
Immune toRiptide (debuff)Crush DepthConfused
BannerBloatfish BannerBloatfish Banner
Cold Bestiary Cold.png-
Water Bestiary Water.pngResistant
Sickness Bestiary Sickness.pngVulnerable
Electricity Bestiary Electricity.pngVulnerable
Heat Bestiary Heat.pngResistant

The Bloatfish is an enemy that spawns in the 4th layer of the Abyss. While it is not aggressive and will not chase the player to attack them, it can still slightly hurt them via its low contact damage. It serves primarily as a meat-shield for other enemies, as it absorbs projectiles and gets larger as it takes damage, potentially reaching 3 times its original size.


  • The Bloatfish nullifies the piercing capabilities of any projectiles that come in contact with it, effectively absorbing them.
  • In the get fixed boi seed, their maximum size is no longer capped meaning they can grow indefinitely.


  • The BestiaryBestiary entry for the Bloatfish: "More geological than biological, bloatfish have sticky glue-like skin that they use to cover their bodies in voidstone. Though it protects them from predators, their immense weight has sunk them to the deepest parts of the Abyss."
  • Although the Bloatfish is based on the ocean sunfish, which lives in the warmer and higher places of the water column, the Bloatfish only spawns at the very bottom of the Abyss.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Now has 25% less health and 10% less damage in Master Mode.
    • Now drops Depth Cells after defeating Anahita and Leviathan instead of Calamitas Clone.
    • Nerfed health from 9000 / 18,000 Expert Mode to 7200 / 14,400 Expert Mode.
    • Now drops 5-7 / 7-10 Expert Mode Depth Cells at a 50% chance instead of 5-7 at a 50% chance with a 50% chance to drop an extra 2-3 in Expert Mode.
    • Now vulnerable to electricity and sickness debuffs, but resistant to water and heat debuffs.
    • Nerfed health from 12,000 / 24,000 Expert Mode to 9000 / 18,000 Expert Mode.
    • Decreased Crush Depth duration from 15 seconds to 5.
    • No longer drops Halibut Cannon.
  • Reduced Halibut Cannon drop rate from 0.1% Revengeance Mode to 0.0001% Revengeance Mode.
  • Increased minimum coin drop amount from 1 Copper Coin to 30 Silver Coin.
    • Nerfed health from 20,000 / 40,000 Expert Mode to 12,000 / 24,000 Expert Mode.
    • Can now drop Halibut Cannon at a 0.01% chance.
    • Can now drop Depth Cells after defeating Calamitas.
    • Now gets larger when hit.
    • Resprited.