Koi

MythicalUnobtainable

Hunger

2,500

Status

Unobtainable

From Eggs

Type

Pet

Koi is a mythical pet in Grow a Garden. It is currently unobtainable and was previously available through limited-time events or special promotions. This pet may return in future updates.

Koi Size Classifications

Small

Hatch < 1 kg

Normal

1 kg ≤ Hatch < 5 kg

Huge

5 kg ≤ Hatch < 7 kg

Titanic

8 kg ≤ Hatch < 9 kg

Godly

Hatch ≥ 9 kg

Grow a Garden Koi Info

Obtaining Methods

Various ways to acquire this pet

ShopZen Shop

EventZen Event

Koi Passive Abilities

Special passive and effects

Fish of Fortune

When hatching eggs

Egg Boostthere is a (0.22 * Weight + 3)% chance to get the egg back. Cannot recover Premium/Exotic/Rainbow Eggs. Upon successful activation, the egg is not refunded to the inventory but instead placed back in the place it was hatched from.

Koi Trivia

Interesting facts and trivia

The Koi and Mochi Mouse pets are currently the only pets that can have different colors, making them the most vibrant pets in the game.

The Koi, like the Seal, is locked behind a maximum of 8% chance. Unlike the Seal, due to being a shop pet, they cannot be hatched heavy and grown large enough to reach this limit. Meaning the only way to reach their ability ceiling is through glitches or stacking enough passive boosters. The highest potential for a Lucky Hatch is 64% (8 x 8) (for now can be reached only with a full team of rainbow maxed out koi fishes with base weight above 1kg + pet toys + grandmaster sprinkler).

The Koi's ability description in the shop used to be different, and it was said to increase egg hatch luck instead of having a chance to refund an egg. However, in the player's inventory, it would have the same ability as it does now.

The Koi's value used to be bugged, showing as 0 when asking Raphael.

On 7/26/2025, 7 hours before Update 1.16.0, the Koi received a massive buff in which the pet's recovery rates of an egg more than quadrupled (~0.7% --> ~3.2%).

Koi variants will sometimes mix up, making it look like an entirely new variant.