Description

Doitsu Showa Japanese Koi Carp

Cyprinus carpio

Overview

The Doitsu Showa Koi is a striking scaleless koi variety prized for its bold black (sumi), red (hi), and white (shiroji) patterning combined with the sleek, leather-like appearance of Doitsu koi. Its dramatic contrast and clean body lines make it a standout feature fish in any pond.

Origin

Japan (selectively bred ornamental koi)

Feeding

  • Omnivorous: high-quality koi pellets, wheatgerm food

  • Supplement with vegetables, shrimp, and occasional fruit treats

  • Feed 1–2 times daily depending on water temperature

Tank / Pond Mates

  • Peaceful and compatible with other koi and goldfish

  • Avoid housing with aggressive or fin-nipping species

Aggression

Peaceful

Experience Level

Beginner to advanced – suitable for all pond keepers with adequate space

Water Parameters

  • Temperature: 15–25°C (59–77°F)

  • pH: 6.8–8.2

  • Hardness: Moderate

  • Requires excellent filtration and oxygenation

Notes

  • Best kept in outdoor ponds due to adult size and activity

  • Color and pattern intensify with proper diet and water quality

  • A long-lived, intelligent fish that can recognize its keeper

An elegant and highly sought-after koi variety, the Doitsu Showa is perfect for pond enthusiasts seeking bold contrast, refined beauty, and classic Japanese koi appeal.