Doitsu-goi (ドイツ鯉) Originated by crossbreeding numerous various established versions with "scaleless" German carp (commonly, fish with only just one line of scales alongside both sides on the dorsal fin). Also composed as 独逸鯉, 4 most important forms of Doitsu scale designs exist. The most typical type (referred to earlier mentioned) https://www.propanraya.com/cara-merawat-ikan-koi-agar-tetap-sehat-dan-indah-di-kolam-rumah