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Obsidian Swordfish
  • Obsidian Swordfish item spriteold Obsidian Swordfish item sprite
Stack digit 1.png
Damage70 (Melee)
Knockback6.5 (Strong)
Critical chance24%
Use time20 (Very fast)
RarityRarity level: 7
Research1 required
Projectile created
  • Obsidian Swordfish
    Obsidian Swordfish
Not to be confused with the pre-Hardmode Swordfish, another spear which is obtained through fishing.

Animation of the Obsidian Swordfish. Note the high amount of critical hits.

The Obsidian Swordfish is a Hardmode spear. It has the second-highest base damage of any spear (beaten only by the North Pole). However, it is very short compared to other Hardmode spears. It is obtained via fishing in lava, by using any lava fishing method (including lava bait or Lavaproof Fishing Hook) during Hardmode, or only by using the Hotline Fishing Hook.

The Obsidian Swordfish has an extraordinarily high base critical strike chance of 24% as opposed to the usual 4%. This gives it not only the highest base critical strike chance of any melee weapon, but also the second highest of any weapon, tied with the Sky Fracture and surpassed only by the Sniper Rifle.

Its best modifier is Godly or Demonic. Both modifiers increase the average damage output by the same amount.


  • The world does not need to be in Hardmode in order to catch this item. However, a Hotline Fishing Hook is required, which can only be obtained in Hardmode worlds.



  • Despite having sword in the name, this weapon is not a sword, but a spear.
  • Obsidian Swordfish have a strikingly similar appearance to Obsidifish.
  • In real life, obsidian is extraordinarily sharp, which may be why the weapon has such a high crit chance.


  • Desktop Changed the fishing requirements from needing the Hotline Fishing Hook at any point to instead need any lava fishing method in Hardmode only.