ChillTank
Wishlist on Steam®Keep a little room for wonder
All fish & skins
In the real world

Koi

Cyprinus rubrofuscus

Koi are ornamental carp selected for their colors and patterns, rather than a separate collection of wild species.

Fish

Koi

Classic Koi

Cyprinus rubrofuscus Cream, orange and dark patches give the Classic Koi its pond colours.

Common
KoiLv 11.00x

The in-game Classic design. Select the card to inspect it.

Reported length

90 cm

Water type

Freshwater

Scientific name

Cyprinus rubrofuscus

Real-world references. Size varies with age, population and environment.

  • Native range

    A domesticated lineage developed in East Asia, with major contributions from Chinese and Japanese breeders; now kept worldwide.

  • Habitat

    Freshwater ponds and managed water gardens. Their carp relatives also occupy rivers, lakes and reservoirs.

  • Diet in nature

    Omnivorous, taking both plant and animal foods.

  • Natural appearance

    Domestic koi have many combinations of white, red, orange, gold and black. Their mouth has two pairs of barbels, unlike a goldfish.

Did you know?

Color varieties are forms of ornamental carp; a different pattern does not make a koi a different species.

Domesticated ornamental carp, also called nishikigoi. Older references often place koi under Cyprinus carpio.

Sources & species notes
  • US Geological Survey — Koihttps://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=3294
  • Southern Regional Aquaculture Center — Koi and Goldfishhttps://extension.rwfm.tamu.edu/wp-content/uploads/sites/8/2013/09/SRAC-Publication-No.-7201-Species-Profile-Koi-and-Goldfish.pdf
  • Smithsonian National Zoohttps://www.nationalzoo.si.edu/animals/japanese-koi

Explore this species’ in-game skins below. ChillTank includes artistic colourways as well as Classic designs; skin names and rarities are game concepts.

From the real animal to your little world

Koi skins in ChillTank

Compare all 79 designs, including archived skins. The cards and detail pages use the same presentation as FishShop. Classic designs sit alongside artistic colourways; skin rarity, growth values and decorative patterns are game concepts, rather than real-world varieties or fishkeeping advice.

Select a card for its stats, or open a full skin page for the artwork and story. Shop offers rotate inside the game; this encyclopedia does not promise current stock.

Koi · Fish & Skins

Choose a species to discover its real-world story and in-game skins. Select any card to inspect it or open its full skin page.

79skins

Archived skins remain here as references. They no longer appear in FishShop offers; fish already owned are kept. Archived designs may return after an overhaul, but there is no confirmed timing.

ArchiveNo longer offered
Fish

Koi

AIRBORNE

Cyprinus rubrofuscus Cool turquoise, mint and pale blue facets give AIRBORNE its soft reef colours.

Uncommon Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Amber Drift

Cyprinus rubrofuscus Pale sand warms into amber and cocoa, with long darker bands running through the colour.

Uncommon Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Amber Leopard

Cyprinus rubrofuscus Cocoa spots and amber patches cover a pale sandy base in a warm, irregular pattern.

Epic Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Amber Sky

Cyprinus rubrofuscus Dusky cocoa, honey amber and a rose-cloud finish.

Epic Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Amber Veil

Cyprinus rubrofuscus Honey gold, cream and dark brown form warm, uneven patches with plenty of light between them.

Rare Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

APOLLON

Cyprinus rubrofuscus Warm gold and soft yellow facets make APOLLON easy to spot.

Common Archived skin
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Asagi Net

Cyprinus rubrofuscus An ordered blue net covers the back, above red lower-flank and fin accents.

Rare Archived skin
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Aurora Check

Cyprinus rubrofuscus Ice-turquoise and mauve diamonds link through pale ivory.

Rare Archived skin
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Aurora Veil

Cyprinus rubrofuscus Two soft mint and lilac ribbons over midnight navy.

Epic Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Azure Steps

Cyprinus rubrofuscus Cyan back patches, violet blue and a little coral brighten warm ivory.

Epic Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Blackwater

Cyprinus rubrofuscus Warm ivory and amber stripes across rich tea brown and espresso.

Uncommon Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Blue Lace

Cyprinus rubrofuscus Clear sapphire stripes across bright powder blue, with small ivory accents.

Rare Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Blue Shusui

Cyprinus rubrofuscus Dark blue back rails, a clear sky-blue centre and rust-red lower flanks.

Rare Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Blushstone

Cyprinus rubrofuscus Rose mauve, warm terracotta and creamy sand.

Epic Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Candy Calico

Cyprinus rubrofuscus Coral pink, cyan and warm yellow gather in unequal calico patches.

Epic Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Cherry Check

Cyprinus rubrofuscus Three broad alternating cherry and ivory saddle rectangles form a broken two-row check.

Rare Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Cherry Steps

Cyprinus rubrofuscus Cherry-pink saddles cross ivory, with cyan and lilac near the tail.

Rare Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Cinnamon Shell

Cyprinus rubrofuscus Cinnamon shell shapes overlap ochre scallops and pale ivory.

Uncommon Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Citrine Drift

Cyprinus rubrofuscus Butter gold flows through soft lime into misty sage.

Common Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Citrine Leopard

Cyprinus rubrofuscus Lemon fields carry open cyan spots, with a few lilac accents.

Exotic Skin reference
KoiLv 11.00x
Open skin page
Fish

Koi

Classic Koi

Cyprinus rubrofuscus Cream, orange and dark patches give the Classic Koi its pond colours.

Common Skin reference
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Cloudberry

Cyprinus rubrofuscus Soft apricot drifts through rosy pink into lavender.

Rare Archived skin
KoiLv 11.00x
Open skin page
ArchiveNo longer offered
Fish

Koi

Copper Current

Cyprinus rubrofuscus Copper and cocoa stripes over warm apricot and cream.

Uncommon Archived skin
KoiLv 11.00x
Open skin page
Fish

Koi

Coral Pearl

Cyprinus rubrofuscus Large coral-pink spots and smaller cyan touches sit over warm ivory.

Bonkers Skin reference
KoiLv 11.00x
Open skin page

Species notes & sources

These field notes describe the real-world animal represented by this ChillTank species. Where an entry represents a broader group, the notes say so; adult measurements retain their stated scope. Consult specialist care guidance before keeping a real animal.