Goldfish Encyclopedia — 77 Species Directory
Encyclopedia of popular goldfish varieties with care guides, traits, and show standards.
Showing 6 of 77 species
Black Ranchu
Carassius auratus var.
A ranchu that shines jet black all over. The combination of a solid black chic body color and typical ranchu body shape has unique appeal. Color can change, so environmental management to maintain black coloration is important.
Brown Ranchu
Carassius auratus var.
A ranchu with calm brown body coloration. Brown goldfish are rare and appreciated by enthusiasts for their unique beauty. Can be maintained using the same methods as regular ranchu.
Butterfly Telescope
A telescope eye goldfish with butterfly-wing spread tail. Top-view tail shape is main viewing point.
High-head Tancho
Carassius auratus var.
A tancho goldfish with a particularly tall, highly developed head wen. The round red wen on the crown of the white body evokes the red crown of a crane. The height of the wen and vibrancy of red determine its ornamental value.
Red-white Ranchu
Carassius auratus var. ranchu
A ranchu with vivid red patterns on a white base. The red-white color scheme is striking when viewed from above, making it popular in shows. Combines ranchu body beauty with red-white coloration.
Tosakin Goldfish
A natural monument from Kochi Prefecture. Called 'Queen of Goldfish' for its elegantly spreading large tail.
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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.