Rusty Koi is a Fish material (item) in Genshin Impact 3.5. Guide includes locations, bait, respawn time, & fishing spots of Rusty Koi.
Table of Contents
3.5 Version Update | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
![]() | ![]() | ||||||||||
![]() | ![]() | ![]() | |||||||||
Fungus Mechanicus | Faruzan Hangout | ||||||||||
Dehya Story | Heated Battle Mode |
What Is Rusty Koi?

Category | Fish |
---|---|
Detail | A large fish said to be the descendant of dragons. This is a variant species of Koi, and is sometimes termed the awakened dragon amongst them. In stark contrast to its rather shabby appearance, the Rusty Koi has shed its opulent gold tabard in exchange for a hard armor of rusty bronze. Very strong-willed, it will fight any interloper that dares to steal its food or enter its territory. In terms of pure fighting capability, it is even a match for smaller sea creatures and has thus been given the nickname Ironbone Dragon in honor of its strength, which is considered the backbone of its species' future revitalization. |
Fishes Respawn After 3 Days
We confirmed that fishes respawn after 3 days. 3 Days is real life time and you cannot have fishes back even if you progress in-game time by the time control option.
Different Fishes May Appear Depending On In-Game Time
Although changing in-game time does not have fishes appear, there might be a different fish pool depending on in-game time. Change the in-game time at the same fishing location and make sure that there are no more fishes appearing.
How To Get Rusty Koi & Location Map
Lack materials in your world? Search for people who would like to help in this: Item Exchange Thread
How To Get |
---|
Region: Mondstadt, Liyue, Inazuma Bait: Fake Fly Bait or Glowgrass Bait |
Get Rusty Koi Through The Fish Event

Lunar Realm is the perfect event to farm fishes required for item exchanges at the Fishing Associations.
Lunar Realm EventMondstadt Locations
![]() Click to Enlarge Cider Lake 1 |
Liyue Locations
![]() Click to Enlarge Guili Plains |
![]() Click to Enlarge Luhua Pool |
![]() Click to Enlarge Wangshu Inn |
Inazuma Locations
![]() Click to Enlarge Koseki Village 1 |
Any kinds of fishes can be converted to the Fish Ingredient.