Nishikigoi Pond
A koi pond in your pocket
Free · Designed for iPad. Not verified for macOS.
A small pond, in the palm of your hand.
Tap to scatter feed, and your koi rise from the deep water,
trailing ripples as they come.
■ A pattern no other koi will ever wear
Every koi's markings are generated, one fish at a time.
Kohaku, Sanke, Showa, Tancho, Ginrin —
the same pattern is never born twice.
■ Raise them
A young koi's colors are still pale.
Day by day the hi (red) rises, the kiwa (edges) sharpen,
and the sumi (black) surfaces only later.
What this one becomes, you won't know until it grows.
■ Breed them
Choose two koi and cross them, and a fry is born
carrying its parents' patterns.
A jumbo bloodline, a Tancho bloodline —
build your own lineage in pursuit of the perfect koi.
■ Phantom koi
Once in a great while, a koi is born that no field guide holds —
a "phantom." Sakura-fubuki, Hoshifuri, Hisui, Suminagashi, Raimon.
One of a kind, for your pond alone.
■ The show
Enter your finest koi in the show.
Balance of the hi, sharpness of the kiwa, quality of the sumi, the body.
The judges score in earnest.
Feed three times a day, keep up your daily care,
and watch a pond of your own slowly take shape.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
New blood has entered the pond.
Kujaku, Kin Matsuba, Hi Utsuri, Kumonryu. Four varieties join the field guide: the fine net that surfaces over golden scales, the black body whose hi carries no white. Forms that were once lumped together now carry names of their own.
And three more phantoms: Akanesasu, Soka, Sazanami. New lore waits at the back of the guide.
The field guide now holds twenty-seven.
Also fixed: the sumi markings that were missing from some sample cards in the field guide.
The developer, Kouki Ohta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Kouki Ohta
- Size
- 6.3 MB
- Category
- Simulation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Kouki Ohta