Doitsu-goi (ドイツ鯉) originated by crossbreeding several unique established types with "scaleless" German carp (usually, fish with only one line of scales together all sides from the dorsal fin). Also penned as 独逸鯉, 4 main different types of Doitsu scale designs exist. The most common form (referred to previously mentioned) features https://www.propanraya.com/cara-merawat-ikan-koi-agar-tetap-sehat-dan-indah-di-kolam-rumah