Goldfish Encyclopedia — 77 Species Directory
Encyclopedia of popular goldfish varieties with care guides, traits, and show standards.
Showing 4 of 77 species

Black Lionhead
Carassius auratus var.
All-black Lionhead goldfish. Well-developed black wen creates a majestic, imposing appearance. Specimens that maintain black without fading are rare and valuable. Chinese variety.
© C Lion hiro / Public domainButterfly Tail
Tail fins spread like butterfly wings when viewed from above. Bred in China, most impressive in top-down viewing.

Egg Fish Goldfish
Carassius auratus var.
Ancient Chinese egg-shaped goldfish. No dorsal fin with round body similar to Ranchu, but without wen development. Prototype of Chinese goldfish varieties.

Kirin Goldfish
Carassius auratus var.
Rare goldfish with mosaic-like scale mutation. Mix of normal and transparent scales creates unique sparkling appearance. Chinese variety, rare in Japan.
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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.