Rusty Koi is a Fish in Genshin Impact's Fishing System. Learn where to find Rusty Koi, the best bait and rod for catching it, how to use it, and other information in this Fishing guide!

Rusty Koi Locations

Spawn Time and Region

All Rusty Koi Locations

Fishing Spot Locations
Wangshu Inn	Guili Plains
Luhua Pool	Koseki Village Right
Whispering Woods

Take a look at our Fishing Spot guide for other fishes' locations:
List of Fishing Spot Locations

How to Catch Rusty Koi

Best Bait for Rusty Koi

Fishing Bait	How to Get
Fake Fly Bait	Crafted Formula: Purchase from Mondstadt Fishing Association

You have to use Fake Fly Bait to catch the Rusty Koi, because it won't bite if you're using any other bait.
How to Craft & Use All Bait

Best Fishing Rod to Use

The Rusty Koi can only be caught with a Fishing Rod. Since this fish can spawn anywhere, you can use whichever rod you want as long as you're in the correct region! See which Fishing Rods to use in each region here:

How to Get & Use All Fishing Rods

How to Use Rusty Koi

Used in the Fishing Association

Fishing Association Items
The Catch

Fish are used to buy different items from Fishing Associations. Take a look at our Fishing Association guide for a list of all items for sale, as well as how much they cost:
All Fishing Association Items

Used in the Housing System

Like all Fish types, you have a chance to get an Ornamental Rusty Koi while fishing. The Ornamental type is harder to catch, but you'll be able to place it in your Serenitea Pot with a Pool of Sapphire Grace!
Housing System & Serenitea Pot Guide

Used for Fish Meat

The Rusty Koi can also be processed into Fish for cooking! Just walk up to any type of stove, go to the Food Processing tab, and select the Fish icon.
See Fish Meat Guide & Recipes

Rusty Koi Information

Archive Type and Information

Rusty Koi	Type	Koi Fish
	Region	Anywhere
	Spawn Time	Anytime

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 monsters and has thus been given the nickname ''Ironbone Dragon'' in honor of its strength, which is considered the backbone of its species' future revitalization.

Genshin Impact Related Guides

Fishing System Guide

All Fishing System Guides

All Fish

Divda Ray	Formalo Ray	Rippling Heartfeather Bass
Maintenance Mek - Platinum Collection	Maintenance Mek - Situation Controller	Maintenance Mek - Initial Configuration
Maintenance Mek - Gold Leader	Sunset Cloud Angler	Sandstorm Angler
True Fruit Angler	Peach of the Deep Waves	Halcyon Jade Axe Marlin
Lazurite Axe Marlin	Streaming Axe Marlin	Blazing Heartfeather Bass
Maintenance Mek - Water Body Cleaner	Jade Heartfeather Bass	Medaka
Glaze Medaka	Sweet-Flower Medaka	Aizen Medaka
Dawncatcher	Crystalfish	Lunged Stickleback
Betta	Venomspine Fish	Akai Maou
Snowstrider	Golden Koi	Rusty Koi
Brown Shirakodai	Purple Shirakodai	Tea-Colored Shirakodai
Abiding Angelfish	Raimei Angelfish	Moonfin
Pufferfish	Bitter Pufferfish