Premium Goldfish Varieties and Price Guide | The Appeal and Care of Ryukin, Azumanishiki, Jikkin, and Edonishiki

The world of goldfish is home to numerous premium varieties born from centuries of selective breeding. Each variety possesses distinctive beauty in body shape, tail fin, coloration, and the development of its hood (or wen). Enthusiasts have long been captivated by the depth and sophistication these fish offer. This article provides detailed explanations of the characteristics and care tips for representative premium varieties: Ryukin, Azumanishiki, Jikkin, Edonishiki, and Bubble-eye goldfish.

Ryukin (琉金) — The Iconic Round-Bodied Goldfish

The Ryukin is the quintessential representative of "fantail goldfish" (round-bodied varieties), characterized by a rounded body shape and long, elegant tail fins that often exceed its body length. It is believed to have been introduced to Japan during the Edo period via Ryukyu from China, and its name derives from this origin.

When appreciating the fish, pay attention to the balance between the roundness of the body and the spread of the tail fins. Viewed from above, a body shape close to a perfect circle is considered ideal, and individuals whose tail fins spread fan-like when viewed from the side are regarded as high quality. The variety of color options, including red, white, and kohaku (red and white combined), are also part of their charm.

Care difficulty is beginner to intermediate level. However, one concern to watch for is swim bladder disease. Digestive problems can cause abnormalities in the swim bladder, leaving the fish unable to swim properly with its belly facing upward. Prevention involves selecting sinking pellets and avoiding overfeeding. Additionally, Ryukins are sensitive to temperature fluctuations, so during seasonal transitions use heaters or insulation measures to prevent sudden changes.

Azumanishiki (東錦) — A Three-Color Masterpiece

The Azumanishiki combines the body type of an Oranda with calico (red, white, and black tri-color) patterning. The hood that develops on the head combined with vivid tri-color markings creates a distinctive, striking appearance.

Color distribution varies considerably among individuals and changes as they grow. At the fry stage in particular, patterns are not yet fully established, so selecting good quality patterning requires experience. Color development is also influenced by the rearing environment—outdoors with sunlight exposure, red tones intensify, while lower water temperatures tend to deepen black coloration.

Water quality management directly affects hood development, making weekly water changes (1–2 times per week) essential. Nitrate accumulation can cause the hood to shrink. Feeding should be done approximately twice daily, limited to amounts the fish can consume within 5 minutes.