Ryukin Goldfish (Carassius auratus var. Ryukin) Care Guide

A fancy goldfish with a short, deep body and a distinctive high dorsal hump behind the head. Known for its tall dorsal fin and double tail.

Overview

Carassius auratus var. Ryukin is a species in the family Cyprinidae. A fancy goldfish with a short, deep body and a distinctive high dorsal hump behind the head. Known for its tall dorsal fin and double tail. Hardy among fancy goldfish, making it a good choice for beginners to the fancy varieties.

Taxonomy

Family: Cyprinidae
Genus: Carassius
Scientific name: Carassius auratus var. Ryukin
Origin: East Asia

Habitat

The ryukin is a fancy goldfish (Carassius auratus) bred for a high, humped back and deep body. Like all goldfish it descends from domesticated East Asian crucian-carp stock and is a hardy, cold-tolerant omnivore.

Tank requirements

Minimum tank volume: 150 L
Temperature: 18-24 °C
pH: 6.5-8
GH: 5-20 °dGH
Water flow: low
Adult size: 15-25 cm
Lifespan: 10-15 years
Difficulty: beginner

Diet

Classified as omnivore. Recommended feeding frequency: 2x daily. In captivity, offer a varied diet appropriate to the species — quality prepared foods supplemented with frozen or live items of suitable size.

Compatibility

Temperament: peaceful
Position in tank: middle
Compatible tank mates: Another Goldfish, Dojo Loach, White Cloud Minnow, Nerite Snail
Avoid with: Tropical Fish, Small Shrimp, Fin Nippers

Breeding

Breeding strategy: egg-scatterer
Breeding difficulty: intermediate