Doitsu Are German carp which might be scale-fewer. Depending upon the sort of Doitsu, there might be scales together the lateral and dorsal traces of your koi or no scales whatsoever. Quarantine: Quarantine new Koi ahead of introducing them to the most crucial pond to stop the unfold of illnesses. https://www.propanraya.com/cara-merawat-ikan-koi-agar-tetap-sehat-dan-indah-di-kolam-rumah