Female koi tend to obtain rounder heads and bellies, Whilst male koi have pointed heads and more slender bodies. Males may be mistaken for girls when they're overfed and turn out to be obese. Quarantine: Quarantine new Koi ahead of introducing them to the main pond to prevent the unfold https://www.propanraya.com/cara-merawat-ikan-koi-agar-tetap-sehat-dan-indah-di-kolam-rumah