Addendum Hai Collection, Lower Volume Radical: Fish (yú) Character: Zì Kangxi Stroke Count: 19 Page 1574, Entry 01 Supplement to the Collection of Characters (Zihui bu): Same as the above. In the Fujian region, the fish used for reciprocal gifts is known as the zi fish; this fish has a flat body, many bones, but delicious, fatty meat. Literary Expositor (Erya): Refers to this as the changfan.