How much is a ranchu goldfish?

Price by source

• Chain pet store: $8 to $25. Young fish, usually Thai or Chinese side-view type, sold before the shape is clear.
• Specialist shop or importer: $40 to $150. Second-year fish (nisai) from Thai farms, hand-selected, often with a photo of the actual fish.
• Online auction or live sale: $80 to $400. Larger Thai fish, sometimes with video. Premium Thai jumbo ranchu of 4 to 5 inches body run $250 to $300 and more.
• Japanese breeder lines: $300 to $2,000, and well beyond that for fish that have placed at a show. Named lineages, top-view type, sold by age and by the breeder's own ranking.

Add shipping. Live fish shipping inside the US or UK runs $30 to $80, and an import from Thailand or Japan adds transit, a transshipper's fee and sometimes a quarantine charge. A $60 fish can easily be a $130 fish by the time it is in your tub.

Why ranchu are expensive

A breeder hatches thousands of fry each spring and culls the great majority in the first weeks: wrong tail, bent back, missing fin. Of what remains, perhaps a few percent grow into fish with a clean outline. The price of one good fish carries the cost of raising the ones that were not. A ranchu is also slow to finish. The shape you are paying for at three years took three years of tub space, food and water changes.

Show culture adds the rest. In Japan, fish are ranked on a sumo-style sheet at each show, and a fish that placed, or whose parents placed, sells for what a collector will pay rather than what it cost to raise.

What is worth paying for

For a pet tank, a $40 to $80 nisai from a good importer is the sweet spot: old enough that the back and tail are visible, young enough to have years ahead. Spend more only if you can judge the outline yourself or you are buying from a breeder whose reputation you trust. The buying guide lists what to check before paying anything, and the life stages page explains why a tosai is cheap and an oya is not.