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 during Hardmode. The chance to catch it is 1/7 with 50% Fishing power and above.
- Because the requirements for catching the Obsidian Swordfish are really low it is possible to catch it at the start of Hardmode as long as you have lava bait. The Obsidian Swordfish is significantly better than the best Pre-Hardmode spear, Dark Lance.
- 电脑版 126.96.36.199：Changed the fishing requirements from needing the Hotline Fishing Rod to needing lava critter bait in Hardmode.
- 电脑版 1.3.1：外观更新。
- 电脑版 1.2.4：引入。