Cyprinidaefreshwater fishIntermediate

Goshiki Koi

Cyprinus rubrofuscus (domesticated koi)

Origin: Captive bred (Japan)

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Water Parameters

Temperature525 °C
15 °C35 °C
pH78.5
49
GH (Hardness)520 °dGH
0 °dGH30 °dGH
KH (Alkalinity)315 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
60 cm
Min Tank
2000 L
Lifespan
20-30
Swimming Level
All
Schooling
Yes (3–20+)
Diet
Omnivore
Temperament
Peaceful; thrives in groups with other koi varieties

About

Goshiki, meaning 'five colours' in Japanese, displays a complex and captivating pattern of white, red, black, blue, and dark blue across its scales, with a distinctive dark net-like scale reticulation overlaying the base pattern. The interplay of these five colour elements makes each Goshiki entirely unique and highly prized among serious koi collectors. Goshiki is considered a Kawarimono variety and has grown in popularity across European koi ponds in recent decades.

Care Guide

House in a well-filtered pond of at least 2,000 L with good water quality and clarity for best visual appreciation. Maintain pH 7.0–8.5, temperature 5–25°C; cold-hardy through Northern European winters. Feed high-quality koi pellets or sticks with color-enhancing supplements to maintain the depth of red and contrast of dark markings. Perform regular water changes and UV sterilization to prevent bacterial and parasitic infections common in high-density koi ponds.

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