Cyprinidaefreshwater fishintermediate

Asagi Koi

Cyprinus rubrofuscus

Also known as: Asagi Koi, Blue Koi, Nishikigoi

Origin: Japan

A

Water Parameters

Temperature525 °C
15 °C35 °C
pH6.87.8
49
GH (Hardness)520 °dGH
0 °dGH30 °dGH
KH (Alkalinity)315 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
90 cm
Min Tank
1000 L
Lifespan
20-35
Swimming Level
middle
Schooling
No
Diet
omnivore
Temperament
peaceful, occasionally shy

About

Asagi is one of the oldest koi varieties, prized for the beautiful reticulated blue-grey scale pattern on its dorsal surface that contrasts with red (hi) markings on the flanks, gill plates, and fins. The pattern deepens and improves with age. Asagi is considered a "traditional" koi variety and is highly respected among koi connoisseurs.

Care Guide

Water: 5–25°C, pH 6.8–7.8, excellent water quality enhances the blue scale pattern. Pond: minimum 1,000 L; deeper ponds suit Asagi's mid-to-bottom swimming preference. Feeding: quality koi pellets and color-enhancing foods to develop the red flanks. Behaviour: often shyer than other koi but becomes tame with regular feeding. Compatibility: all koi varieties; peaceful community pond fish.

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