Tosakin Goldfish

The Tosakin, designated a natural monument of Kochi City, is a uniquely Japanese goldfish variety known as the Queen of Goldfish for its extraordinarily beautiful tail. Its defining feature is a massive, horizontally spreading tail fin in which the two lobes fuse at the center, then flare outward and curl back at the edges—a shape unlike any other goldfish variety, and one best appreciated from directly above. Even gentle water movement can deform the delicate fin structure, so Tosakin must be kept in still or nearly still water in shallow, round basins with minimal aeration. Historically believed to have been developed during the Bakumatsu period in the Tosa Domain, the Tosakin nearly became extinct and was revived through the dedicated efforts of enthusiasts. Today, preservation groups such as the Tosa Gold Club in Kochi work to maintain bloodlines. This variety is extremely rare and suitable only for experienced keepers.

Artificial feed, Bloodworms