Ranchu.net is an independent guide to the ranchu goldfish. It is written by a former keeper, not a breeder or a shop, and it is not affiliated with any lineage, club or seller.
Every illustration on the site is original. The care numbers come from the ranges most experienced keepers agree on and are meant as starting points; your fish, your water and your climate will move them.
The site started in September 2026 and is still growing. If something here is wrong or out of date, it will be fixed. Some product links may become affiliate links in future; that will be marked on the page when it happens.