Goldfish Encyclopedia — 77 Species Directory
Encyclopedia of popular goldfish varieties with care guides, traits, and show standards.
Showing 6 of 77 species
Albino Ryukin
Carassius auratus var.
Albino mutation of Ryukin. Red eyes with white to pale pink body create a mystical appearance. Same care as standard Ryukin but slightly light-sensitive. Popular as rare variety.
Broadtail Ryukin
Carassius auratus var.
Premium Ryukin variety with broad tail fins spreading like a fan. Side view shows tail flowing like a skirt — elegant and graceful. Highly valued in shows.
Calico Ryukin
A ryukin with red-white-black tricolor (calico) pattern. Popular for gorgeous coloring and round body.
Calico Ryukin Long Tail
A ryukin with tricolor calico pattern and long elegant tail fins. Gorgeous representative of ornamental goldfish.
Round Ryukin
Carassius auratus var.
A ryukin with an even rounder and shorter 'marute' body type than standard ryukin. The maximally rounded body shape like a ball is its greatest feature, highly regarded by enthusiasts. Slow swimmer but extremely high ornamental value.
Sarasa Ryukin
Carassius auratus var. ryukin
A ryukin with red patterns scattered on a white base, resembling sarasa koi coloring. The round body and long tail fins are beautiful. Widely popular as an ornamental goldfish.
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Goldfish FAQ
- How much do goldfish cost?
- Common varieties like wakin and ryukin cost 300-2,000 yen, ranchu 3,000-30,000 yen, and show-quality specimens can reach tens of thousands to hundreds of thousands of yen.
- Can beginners keep goldfish?
- Hardy varieties like wakin, ryukin, and telescope goldfish are recommended for beginners. A tank and filter are all you need, and no heater is required.
- How long do goldfish live?
- With proper care, goldfish live 10-15 years, and some individuals can live 20+ years. Water quality management and proper feeding are key to longevity.
- What should I check when buying goldfish?
- Look for symmetrical body shape, stable swimming, well-formed fins, and no injuries or white spots. Breed-specific aesthetic standards are also helpful references.
- What should I be careful about when keeping goldfish?
- Overfeeding causing poor water quality is the most common issue. Feed 1-2 times daily in amounts eaten within 2 minutes, and never skip weekly water changes.